• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Intel Core i7-5820K Features Fewer PCI-Express Lanes After All

btarunr

Editor & Senior Moderator
Staff member
Joined
Oct 9, 2007
Messages
46,277 (7.69/day)
Location
Hyderabad, India
System Name RBMK-1000
Processor AMD Ryzen 7 5700G
Motherboard ASUS ROG Strix B450-E Gaming
Cooling DeepCool Gammax L240 V2
Memory 2x 8GB G.Skill Sniper X
Video Card(s) Palit GeForce RTX 2080 SUPER GameRock
Storage Western Digital Black NVMe 512GB
Display(s) BenQ 1440p 60 Hz 27-inch
Case Corsair Carbide 100R
Audio Device(s) ASUS SupremeFX S1220A
Power Supply Cooler Master MWE Gold 650W
Mouse ASUS ROG Strix Impact
Keyboard Gamdias Hermes E2
Software Windows 11 Pro
It turns out that our older report suggesting that the most affordable of Intel's new Core i7 "Haswell-E" HEDT processors will feature a slimmer PCI-Express root complex, even if it gives you 6 cores at a [hopefully] sub-$400 price-point, holds true, after all. Intel's wacky approach to its latest HEDT processor lineup was confirmed by leaked manuals of Gigabyte's socket LGA2011-3 motherboards, based on the Intel X99 Express chipset. The manual confirms that while Intel's $500-$750 Core i7-5930K and >$1,000 Core i7-4960X offer bigger 40-lane PCI-Express Gen 3.0 root complexes; the Core i7-5820K features a narrower 28-lane one. This means that multi-GPU configurations on systems running the chip won't be too different from those on LGA1150 "Haswell" platforms.

On motherboards with, say, three PCI-Express 3.0 x16 slots, the i7-5930K and i7-5960X will let you run two slots at full x16 bandwidth, and a third slot at x8. On systems with the i7-5820K, the second slot won't go beyond x8, and the third one will cap out at x4. On boards with four slots, one of them will run out of bandwidth. The trade-off for this narrower PCI-Express interface is the fact that you're getting six "Haswell" cores, twelve logical CPUs enabled with HyperThreading, about 12 MB of L3 cache, and a quad-channel DDR4 memory interface, at a price-point not too far off from the Core i7-4790K. So for enthusiasts with no more than two high-end graphics cards, the i7-5820K could provide an attractive gateway option to Intel's new HEDT platform. You can find the leaked manuals in this thread.

View at TechPowerUp Main Site
 
Joined
Sep 7, 2011
Messages
2,785 (0.61/day)
Location
New Zealand
System Name MoneySink
Processor 2600K @ 4.8
Motherboard P8Z77-V
Cooling AC NexXxos XT45 360, RayStorm, D5T+XSPC tank, Tygon R-3603, Bitspower
Memory 16GB Crucial Ballistix DDR3-1600C8
Video Card(s) GTX 780 SLI (EVGA SC ACX + Giga GHz Ed.)
Storage Kingston HyperX SSD (128) OS, WD RE4 (1TB), RE2 (1TB), Cav. Black (2 x 500GB), Red (4TB)
Display(s) Achieva Shimian QH270-IPSMS (2560x1440) S-IPS
Case NZXT Switch 810
Audio Device(s) onboard Realtek yawn edition
Power Supply Seasonic X-1050
Software Win8.1 Pro
Benchmark Scores 3.5 litres of Pale Ale in 18 minutes.
So, the obvious route to take is to pair the cheaper CPU with a PLX 8747 bridge chip equipped board. The lane extender option is already used on selected X79 boards so I can't see mobo makers missing out on the obvious marketing opportunity with X99.
 
Joined
Sep 24, 2010
Messages
56 (0.01/day)
Processor i7 950
Motherboard Asus P6T Deluxe V2
Cooling Zalman CNPS10X Extreme
Memory Kingston HyperX 3x 2GiB
Video Card(s) MSI GTX 570
Storage OCZ Vertex 3 120GB + 8TB
Power Supply Chieftec 750W
This could be wrong, but i think three x8 slots (24 lanes) should be fine for triple sli/cf. After all, pci-ex v3 provides double bandwidth per line comparing to pci-ex v2 we all used not so long ago. So basically pci-ex v3 x8 slot is the same as v2 x16 slot.
 
Joined
Aug 21, 2014
Messages
14 (0.00/day)
I will never buy a E platform Intel screws these users over the worst. Going to start using WS boards from ASUS if I need more PCIE lanes.
 
Joined
Sep 7, 2011
Messages
2,785 (0.61/day)
Location
New Zealand
System Name MoneySink
Processor 2600K @ 4.8
Motherboard P8Z77-V
Cooling AC NexXxos XT45 360, RayStorm, D5T+XSPC tank, Tygon R-3603, Bitspower
Memory 16GB Crucial Ballistix DDR3-1600C8
Video Card(s) GTX 780 SLI (EVGA SC ACX + Giga GHz Ed.)
Storage Kingston HyperX SSD (128) OS, WD RE4 (1TB), RE2 (1TB), Cav. Black (2 x 500GB), Red (4TB)
Display(s) Achieva Shimian QH270-IPSMS (2560x1440) S-IPS
Case NZXT Switch 810
Audio Device(s) onboard Realtek yawn edition
Power Supply Seasonic X-1050
Software Win8.1 Pro
Benchmark Scores 3.5 litres of Pale Ale in 18 minutes.
This could be wrong, but i think three x8 slots (24 lanes) should be fine for triple sli/cf. After all, pci-ex v3 provides double bandwidth per line comparing to pci-ex v2 we all used not so long ago. So basically pci-ex v3 x8 slot is the same as v2 x16 slot.
The lane assignments would be OK for CrossfireX, but Nvidia require a minimum of 8 lanes per card for SLI. As the article states, the slot assignments are 1 @ x16, 1@ x8, 1 @ x4 , so the only way to circumvent the lane restriction for the 5820K- not just for triple cards but to remove limitations for I/O and storage options is to use lane extenders as many current enthusiast and workstation class boards do.
 
Joined
Nov 18, 2010
Messages
7,106 (1.46/day)
Location
Rīga, Latvia
System Name HELLSTAR
Processor AMD RYZEN 9 5950X
Motherboard ASUS Strix X570-E
Cooling 2x 360 + 280 rads. 3x Gentle Typhoons, 3x Phanteks T30, 2x TT T140 . EK-Quantum Momentum Monoblock.
Memory 4x8GB G.SKILL Trident Z RGB F4-4133C19D-16GTZR 14-16-12-30-44
Video Card(s) Sapphire Pulse RX 7900XTX + under waterblock.
Storage Optane 900P[W11] + WD BLACK SN850X 4TB + 750 EVO 500GB + 1TB 980PRO[FEDORA]
Display(s) Philips PHL BDM3270 + Acer XV242Y
Case Lian Li O11 Dynamic EVO
Audio Device(s) Sound Blaster ZxR
Power Supply Fractal Design Newton R3 1000W
Mouse Razer Basilisk
Keyboard Razer BlackWidow V3 - Yellow Switch
Software FEDORA 39 / Windows 11 insider
This is money milking again...

Monopoly remains monopoly....
 
Joined
Apr 2, 2011
Messages
2,645 (0.56/day)
Slow clap for Intel....


We've discussed this ad nauseam with the socket 2011 offerings, Intel offers PCI-e lanes to make up for not having some features baked in. Yet here, Intel has decided to eject extra lanes in favor of more cores at a comparable price. I don't get it.

Intel sold the 3820 and 4820 as being part of an HEDT platform, with actual core counts mirroring high end mainstream offerings. That wasn't great, but it gave you a reason to differentiate between an enthusiast platform and the mainstream. Now Intel muddies the water with the bastard child somewhere between the two. Extra processor cores are great, assuming you can use them. If you need extra cores, you're running highly threaded applications. A sizeable chunk of highly threaded applications can utilize GPUs to process data, so more PCI-e benefits them (in a multi-GPU setup).

The only reason I can see the 5820 existing is for VM servers. A couple of extra cores chugging along would be a much needed boost to capacity. Otherwise, Intel has carved out the expensive part of the HEDT platform, in order to offer cores that functionally will be on the die no matter what. I can't see this as a good thing.
 
Joined
Nov 18, 2010
Messages
7,106 (1.46/day)
Location
Rīga, Latvia
System Name HELLSTAR
Processor AMD RYZEN 9 5950X
Motherboard ASUS Strix X570-E
Cooling 2x 360 + 280 rads. 3x Gentle Typhoons, 3x Phanteks T30, 2x TT T140 . EK-Quantum Momentum Monoblock.
Memory 4x8GB G.SKILL Trident Z RGB F4-4133C19D-16GTZR 14-16-12-30-44
Video Card(s) Sapphire Pulse RX 7900XTX + under waterblock.
Storage Optane 900P[W11] + WD BLACK SN850X 4TB + 750 EVO 500GB + 1TB 980PRO[FEDORA]
Display(s) Philips PHL BDM3270 + Acer XV242Y
Case Lian Li O11 Dynamic EVO
Audio Device(s) Sound Blaster ZxR
Power Supply Fractal Design Newton R3 1000W
Mouse Razer Basilisk
Keyboard Razer BlackWidow V3 - Yellow Switch
Software FEDORA 39 / Windows 11 insider
Slow clap for Intel....
Yet here, Intel has decided to eject extra lanes in favor of more cores at a comparable price. I don't get it.

I strongly believe all lanes are present there, just disabled for better yield. Maybe some unexpected errata.
 
Joined
Aug 10, 2007
Messages
4,267 (0.70/day)
Location
Sanford, FL, USA
Processor Intel i5-6600
Motherboard ASRock H170M-ITX
Cooling Cooler Master Geminii S524
Memory G.Skill DDR4-2133 16GB (8GB x 2)
Video Card(s) Gigabyte R9-380X 4GB
Storage Samsung 950 EVO 250GB (mSATA)
Display(s) LG 29UM69G-B 2560x1080 IPS
Case Lian Li PC-Q25
Audio Device(s) Realtek ALC892
Power Supply Seasonic SS-460FL2
Mouse Logitech G700s
Keyboard Logitech G110
Software Windows 10 Pro
5930K, 5960X on the posted Gigabyte boards:

P1: x16 (x8 when P4 is populated)
P2: x16
P3: x8
P4: x8 (when populated)


Now with the 5820, it turns out to be:

P1: x16 (x8 when P4 is populated)
P2: x8
P3: x4
P4: x8 (when popluated)
 
Joined
Oct 7, 2009
Messages
396 (0.07/day)
System Name Just A Gaming Rig.
Processor AMD FX-8320 @4.1GHz, 1.268V
Motherboard ASUS M5A97 Evo R2.0
Cooling Cooler Master Hyper 212 Evo
Memory 8 GB Crucial Ballistix Sport 1600MHz
Video Card(s) Club 3D R9 280X 3GB royalQueen, @1115/1615MHz
Storage OS+Often used stuff: Kingston SSDNow V300 120GB, Mass storage: WD Blue 1TB
Case Zalman Z3 Plus
Audio Device(s) Integrated
Power Supply Corsair CX600M
Software Windows 8.1 64-bit
Doesn't seem like a big deal. That means that you can run up to triple card setups at x8/x8/x8, and have 4 lanes for storage and other uses. I'd much rather have the 2 extra cores compared to the i7-4820K than extra PCI-E lanes.
 
Joined
Aug 13, 2010
Messages
5,380 (1.08/day)
Not a deal breaker for dual-card runners. Barely a deal breaker for those who run 3 cards.
I'm totally ok with this, and if this is what needs to be dont to have a 6-core under 450$, than bring it on.
 
Joined
Aug 21, 2014
Messages
19 (0.01/day)
I remember an interview J.J. had on the WAN show a few months back where he talked about how ASUS R&D had put together some designs for an X79 Mini-ITX motherboard, but since he was discussing them openly it could be assumed that it would never see the light of day. However, now with a new X99 chipset to look forward to, and the entry chip having a cut down PCI lane allotment , we might be close to seeing an ITX HEDT. Since we haven't seen anything leaked about it yet, it almost certainly wouldn't be available at launch. But it might be something to keep an eye out for come CES, CeBIT, or even waiting as long as Computex.
 
Joined
Jan 20, 2014
Messages
299 (0.08/day)
System Name gamingPZ
Processor i7-6700k
Motherboard Asrock Z170M Pro4S
Cooling scythe mugen4
Memory 32GB ddr4 2400mhz crucial ballistix sport lt
Video Card(s) gigabyte GTX 1070 ti
Storage ssd - crucial MX500 1TB
Case silverstone sugo sg10
Power Supply Evga G2 650w
Software win10
not deal breaker for me either (I am gonna take mATX anyway).. but CPU wise - is there any difference between i7-5820K and i7-5930K? if not - then it is no brainer - 90% of X99 users should take 5820k unless they are really gonna use triple GPU config. I know that 90% of PC users think something like this: "eventually - I might get triple GPU, so I need my system to be time proof.... more lines you say? here, take my money!" , but lets face it - that "eventually" will never come.
 
Joined
Apr 29, 2014
Messages
4,180 (1.15/day)
Location
Texas
System Name SnowFire / The Reinforcer
Processor i7 10700K 5.1ghz (24/7) / 2x Xeon E52650v2
Motherboard Asus Strix Z490 / Dell Dual Socket (R720)
Cooling RX 360mm + 140mm Custom Loop / Dell Stock
Memory Corsair RGB 16gb DDR4 3000 CL 16 / DDR3 128gb 16 x 8gb
Video Card(s) GTX Titan XP (2025mhz) / Asus GTX 950 (No Power Connector)
Storage Samsung 970 1tb NVME and 2tb HDD x4 RAID 5 / 300gb x8 RAID 5
Display(s) Acer XG270HU, Samsung G7 Odyssey (1440p 240hz)
Case Thermaltake Cube / Dell Poweredge R720 Rack Mount Case
Audio Device(s) Realtec ALC1150 (On board)
Power Supply Rosewill Lightning 1300Watt / Dell Stock 750 / Brick
Mouse Logitech G5
Keyboard Logitech G19S
Software Windows 11 Pro / Windows Server 2016
So it was just confirmed now...Well this has made this chip all the more interesting because its market is going to have a wild card chip that fits a different niche area the previous X820/k models filled. Its now a "budget" 6 core chip for people wanting more CPU power but only run 1-2 cards (Even though 3 is possible) which will now fill a different need for people.

I think more people would have preferred a 4 core 8 thread variant with the same PCIE lanes as the other top models, however what they essentially did is make an 1150 style chip with 6 cores for those running the standard gaming rig (Or workstation) who do not care.

We will just have to see who bites on this chip, but I would have been more satisfied seeing another Quad core model than this chip. But I am not the one who is targeted for this chip as I want the lanes and the 6 cores (Well I would love the 8 cores but w/e).
 
Last edited:
Joined
Aug 23, 2013
Messages
543 (0.14/day)
The trade-off for this narrower PCI-Express interface is the fact that you're getting six "Haswell" cores, twelve logical CPUs enabled with HyperThreading, about 12 MB of L3 cache, and a quad-channel DDR4 memory interface, at a price-point not too far off from the Core i7-4790K.


Excepting for the price premium of DDR4 and buying four modules minimum, of course. That's a premium on top of the premium on the motherboard on top of the premium of the hexacore CPU over the mainstream high end CPU.

So really, the price point will be vastly different.
 

newtekie1

Semi-Retired Folder
Joined
Nov 22, 2005
Messages
28,472 (4.25/day)
Location
Indiana, USA
Processor Intel Core i7 10850K@5.2GHz
Motherboard AsRock Z470 Taichi
Cooling Corsair H115i Pro w/ Noctua NF-A14 Fans
Memory 32GB DDR4-3600
Video Card(s) RTX 2070 Super
Storage 500GB SX8200 Pro + 8TB with 1TB SSD Cache
Display(s) Acer Nitro VG280K 4K 28"
Case Fractal Design Define S
Audio Device(s) Onboard is good enough for me
Power Supply eVGA SuperNOVA 1000w G3
Software Windows 10 Pro x64
If it truly is a sub-$400 Hex-Core, I'm ok with the slimmed down PCI-E lanes. It is still enough for x8/x8/x8.
 
Joined
May 1, 2012
Messages
1,027 (0.24/day)
Location
New Jersey, USA
System Name Current Rig
Processor AMD 7800X3D
Motherboard MSI x670e Tomahawk wifi
Cooling Artic Freezer II 360
Memory G.Skill 32gb ddr5 6000mhz
Video Card(s) AMD 7900XTX 24 GB
Storage Samsung SSD 980 PRO 2TB
Display(s) Alienware 3420DW 120 Freesync
Case LianLi Lancool III white non-rgb
Audio Device(s) Onboard ALC
Power Supply Corsair Shift 1000W
Mouse G502 Hero
Keyboard Ducky Shine 5
Software Win 11 64bit
Benchmark Scores The second best!
This is utter "High End" garbage from Intel.

How is a upcoming 5820k/X99 combination any better than a current 4790k/Z97?

Throwing out the six/four core argument out the window.

It's going to be slower stock/oc cpu speed, limited to expensive DDR4 only, and more expensive by at least $100.00.

Intel is just killing their HEDT platform sales.
 
Joined
Aug 13, 2010
Messages
5,380 (1.08/day)
^I'm so disagreeing with that my mind hurts.

5820K is a brilliant chip if it is what we think it is. 400$ 6-core, K-CPU (soldered lid). For me, it's better than 4790K in every way possible.

Intel is reviving their HEDT platform with a more affordable 6-core CPU. Yes, DDR4 prices will be high at launch, like every DDR before.

I wan't to see what enthusaist won't upgrade his 4790K Z97 to a 6-core chip 5820K + X99 for about 200$. Sure i would.
 
Joined
May 1, 2012
Messages
1,027 (0.24/day)
Location
New Jersey, USA
System Name Current Rig
Processor AMD 7800X3D
Motherboard MSI x670e Tomahawk wifi
Cooling Artic Freezer II 360
Memory G.Skill 32gb ddr5 6000mhz
Video Card(s) AMD 7900XTX 24 GB
Storage Samsung SSD 980 PRO 2TB
Display(s) Alienware 3420DW 120 Freesync
Case LianLi Lancool III white non-rgb
Audio Device(s) Onboard ALC
Power Supply Corsair Shift 1000W
Mouse G502 Hero
Keyboard Ducky Shine 5
Software Win 11 64bit
Benchmark Scores The second best!
^I'm so disagreeing with that my mind hurts.

5820K is a brilliant chip if it is what we think it is. 400$ 6-core, K-CPU (soldered lid). For me, it's better than 4790K in every way possible.

Intel is reviving their HEDT platform with a more affordable 6-core CPU. Yes, DDR4 prices will be high at launch, like every DDR before.

I wan't to see what enthusaist won't upgrade his 4790K Z97 to a 6-core chip 5820K + X99 for about 200$. Sure i would.


You say HEDT is being revived by Intel, from being what? Expensive? New features being released before the mainstream platforms>?

I don't think it is, at least for gaming enthusiasts. The platform is many things for many users, but speed and overclocking isn't one of them.
 
Joined
Aug 13, 2010
Messages
5,380 (1.08/day)
It's very simple. I want a 6-core overclockable CPU.
I don't want to pay 600$ for one, hence getting one for 400$ is good. "low-end" X99 would not be as expensive as X79 ones were.

You say many things about the platform (witch im preparing for a review atm) without having any experience with this CPU.
It has speed (both CPU and memory) and definitely overclocking. I don't know how you reached those conclusions.
 
Joined
May 1, 2012
Messages
1,027 (0.24/day)
Location
New Jersey, USA
System Name Current Rig
Processor AMD 7800X3D
Motherboard MSI x670e Tomahawk wifi
Cooling Artic Freezer II 360
Memory G.Skill 32gb ddr5 6000mhz
Video Card(s) AMD 7900XTX 24 GB
Storage Samsung SSD 980 PRO 2TB
Display(s) Alienware 3420DW 120 Freesync
Case LianLi Lancool III white non-rgb
Audio Device(s) Onboard ALC
Power Supply Corsair Shift 1000W
Mouse G502 Hero
Keyboard Ducky Shine 5
Software Win 11 64bit
Benchmark Scores The second best!
It's very simple. I want a 6-core overclockable CPU.
I don't want to pay 600$ for one, hence getting one for 400$ is good. "low-end" X99 would not be as expensive as X79 ones were.

You say many things about the platform (witch im preparing for a review atm) without having any experience with this CPU.
It has speed (both CPU and memory) and definitely overclocking. I don't know how you reached those conclusions.

Congrats on purchasing a six-core when it comes out.

But for gaming you may be losing fps by going that route. The last two low end hedt processors 4820k/3820 have been weaker compared to the high end mainstream 4770k/3770k. I don't see Intel reversing the trend especially with the 4790k just arriving recently.
 
Last edited:
Joined
Aug 13, 2010
Messages
5,380 (1.08/day)
Not purchasing anything, i review hardware for a living. :)

4 cores is 4 cores and 6 cores is 6 cores.
 
Joined
Mar 6, 2008
Messages
2,753 (0.47/day)
Location
Minnesota
Why do people insist on arguing about this sort of thing? Some people need HEDT, some don't. Some people need HEDT with 40 lanes. Some need HEDT with 28 or fewer lanes. Some people need ~4790K with a PEX8747. This is exactly why there is such a thing as market segments. To argue over every decision a company makes is rather childish.
 

Aquinus

Resident Wat-man
Joined
Jan 28, 2012
Messages
13,147 (2.96/day)
Location
Concord, NH, USA
System Name Apollo
Processor Intel Core i9 9880H
Motherboard Some proprietary Apple thing.
Memory 64GB DDR4-2667
Video Card(s) AMD Radeon Pro 5600M, 8GB HBM2
Storage 1TB Apple NVMe, 4TB External
Display(s) Laptop @ 3072x1920 + 2x LG 5k Ultrafine TB3 displays
Case MacBook Pro (16", 2019)
Audio Device(s) AirPods Pro, Sennheiser HD 380s w/ FIIO Alpen 2, or Logitech 2.1 Speakers
Power Supply 96w Power Adapter
Mouse Logitech MX Master 3
Keyboard Logitech G915, GL Clicky
Software MacOS 12.1
Congrats on purchasing a six-core when it comes out.

But for gaming you may be losing fps by going that route. The last two low end hedt processors 4820k/3820 have been weaker compared to the high end mainstream 4770k/3770k. I don't see Intel reversing the trend especially with the 4790k just arriving recently.

Your logic is flawed. The 3820 came out before the 3770k and was a sandy chip. The 4820k is more analogous to the 3770k where the 3820 is better compared against the 2600k or 2700k. Generally speaking the 3820 performed as good or better than it's Sandy equivalent. The only real difference is that it didn't clock as high.

Either way, I still think I would have preferred a quad-core with it's PCI-E root complex intact. Most of the advantage skt2011 has over its mainstream counterparts is it's PCI-E lanes. 6 cores really isn't going to change your gaming experience, even more so when it's shown that as resolutions increase, the amount of CPU power to maintain the same frame rate is less because the GPUs are doing more. So if you're driving 4K displays or surround/eyefinity, I really would imagine that you want those PCI-E lanes. That's me though. I don't plan on divorcing skt2011 any time soon. I really don't think that (other than more cores,) upgrading would get me anything more than just getting a 4930k on the cheap from someone who is upgrading.
 
Joined
Apr 29, 2014
Messages
4,180 (1.15/day)
Location
Texas
System Name SnowFire / The Reinforcer
Processor i7 10700K 5.1ghz (24/7) / 2x Xeon E52650v2
Motherboard Asus Strix Z490 / Dell Dual Socket (R720)
Cooling RX 360mm + 140mm Custom Loop / Dell Stock
Memory Corsair RGB 16gb DDR4 3000 CL 16 / DDR3 128gb 16 x 8gb
Video Card(s) GTX Titan XP (2025mhz) / Asus GTX 950 (No Power Connector)
Storage Samsung 970 1tb NVME and 2tb HDD x4 RAID 5 / 300gb x8 RAID 5
Display(s) Acer XG270HU, Samsung G7 Odyssey (1440p 240hz)
Case Thermaltake Cube / Dell Poweredge R720 Rack Mount Case
Audio Device(s) Realtec ALC1150 (On board)
Power Supply Rosewill Lightning 1300Watt / Dell Stock 750 / Brick
Mouse Logitech G5
Keyboard Logitech G19S
Software Windows 11 Pro / Windows Server 2016
Congrats on purchasing a six-core when it comes out.

But for gaming you may be losing fps by going that route. The last two low end hedt processors 4820k/3820 have been weaker compared to the high end mainstream 4770k/3770k. I don't see Intel reversing the trend especially with the 4790k just arriving recently.
But that is because they were different architectures from the chips that had come out at that time. The 3820 was Sandy-Bridge so even though the 3770K ivy-bridge was out it was on a slightly dated chip architecture and like that the 4820K was Ivy-Bridge while the 4770K was Haswell. The 4820K is also a very good overclocker and was able to beat the 3770K mostly in the range of temps being stable (Plus I saw more chips hitting 4.8Ghz+ than on the 3770K).

The fact is this chip is for people gaming and using a workstation with things like video editing that benefit from the extra cores. It will overclock about as well as Haswell does especially in temps range due to the soldered heatsink and has enough lanes for most peoples setups (2-3 GPU's). Now I personally think the chip is going to be a different niche product this round than it was previously with the changes but its got another area its filling this round.
 
Top