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

[Rant] What AMD brings to processors

Joined
Nov 10, 2006
Messages
4,667 (0.68/day)
Location
Washington, US
System Name Rainbow
Processor Intel Core i7 8700k
Motherboard MSI MPG Z390M GAMING EDGE AC
Cooling Corsair H115i, 2x Noctua NF-A14 industrialPPC-3000 PWM
Memory G. Skill TridentZ RGB 4x8GB (F4-3600C16Q-32GTZR)
Video Card(s) ZOTAC GeForce RTX 3090 Trinity
Storage 2x Samsung 950 Pro 256GB | 2xHGST Deskstar 4TB 7.2K
Display(s) Samsung C27HG70
Case Xigmatek Aquila
Power Supply Seasonic 760W SS-760XP
Mouse Razer Deathadder 2013
Keyboard Corsair Vengeance K95
Software Windows 10 Pro
Benchmark Scores 4 trillion points in GmailMark, over 144 FPS 2K Facebook Scrolling (Extreme Quality preset)
In reply to Common LGA-1366 Cooling Myths Busted. I moved it here because my post became long and rather off the original topic.

Wanted to say thanks to candle_86 and everyone else who put the time in to writing an educational post. Lets see if I can add a little more. (I hope it's all right.:laugh:)

No one mentioned AMD's role in the rise of mainstream 64-bit processing.
Intel designed the Itanium architecture early on. It was designed for servers, it was designed for 64-bit computing, it was designed to handle more than one instruction per cycle (via EPIC). The big problem was that it was not backwards compatible with 32-bit applications. In fact, it wasn't even remotely affiliated with x86 at all. This was the very new, very different world of IA-64. Upgrading to an Itanium server meant ditching all your old server software, buying everything new and starting from scratch.
When 32-bit servers started to come closer to their memory addressing limit, AMD saw a demand for 64-bit memory addressing. They knew, thanks to Intel's flop with Itanium, that people simply would not dive in to a new architecture head first. Like the move from 16-bit to 32-bit, the consumers wanted backwards compatibility. With that in mind, AMD designed and nicely executed their 64-bit extension to 32-bit processors. x86-64, later renamed to AMD64. By making 64-bit processing an extension of the original x86 architecture, backwards compatibility was not only retained, 32-bit performance was downright identical (if not better!). Intel quickly cloned this extended instruction set under the name EM64T. Itanium would never touch the desktop.
The moral of the story is that AMD has brought some major technology to the processor market. Integrated Memory Controllers, HyperTransport and x86-64 to name a few. Intel has cloned all three.


AMD wasn't the only people who designed HyperTransport and it is in no way an AMD-only technology.

As video cards and other quickly growing I/O speeds (SATA, USB2.0, etc) demanded more throughput, they pushed conventional FSB to it's transfer limit. I may get this wrong, but a 64-bit 133MHz bus DDR does (133MHz * 64-bit * DDR / 8 * 2-way =) 2,128 MB/s. PC133 was takes up to 1,064 MB/s. AGP 8x demanded its own 2133 MB/s. Don't forget everything the southbridge wants.. This led to components struggling to share the bandwidth.
Intel's introduced "Quad Pumping" which bought them more time. This effectively quadrupled device bandwidth allowing for more breathing room between devices. AMD followed shortly after, introducing HyperTransport to their processors.
HyperTransport was designed by the HyperTransport Consortium (Advanced Micro Devices, Alliance Semiconductor, Apple Computer, Broadcom Corporation, Cisco Systems, NVIDIA, PMC-Sierra, Sun Microsystems, and Transmeta).
Today's revision of HyperTransport currently can transfer up to 52 GB/s across it's bus, supporting backwards compatibility to older revisions.
Now, instead of simply licensing HyperTransport, Intel decided they would rather design their own interconnect (apparently now dubbed Intel QuickPath Interconnect) which is said to show up in Nehalem.


So, yes. Intel makes advancements on things like SSE, but AMD is making enhancements on things like Integrated Memory Controllers. As candle_86 said, everyone shares.
I personally think Intel should just hop on with HyperTransport. It's tried and true. AMD already worked the bugs out for them. They're copying the IMC and HT (and rumors of copying Fusion).. Why not just go for HyperTranport too?
 
Last edited:
one error to not, PCI is 32bit, and max throughput of the PCI bus is 133mb/s for all PCI deviced, the more in use the less bandwith for a PCI device. 64bit PCI is a server component only, it never caught on in the desktops because it requred all brandnew 64bit PCI cards.
 
Now that ATI is part of AMD, you might want to shed some light on AMD's influence on ATI's innovation.

Nice post.
 
one error to not, PCI is 32bit, and max throughput of the PCI bus is 133mb/s for all PCI deviced, the more in use the less bandwith for a PCI device. 64bit PCI is a server component only, it never caught on in the desktops because it requred all brandnew 64bit PCI cards.

But I never mentioned PCI? It was intended to be implied with the "Don't forget everything the southbridge wants.." bit. PCI wants 133 MB/s, IDE wants another 133 MB/s, SATA wants up to 375 MB/s, USB wants 60 MB/s.. It still adds up.
 
Last edited:
Now that ATI is part of AMD, you might want to shed some light on AMD's influence on ATI's innovation.

Nice post.

What influence is that?

Actually, I find it funny that the company who's always been a step behind in instruction sets (SSE?) is now the same company telling nVidia that DirectX 10.1 actually is important.

I always thought AMD and ATI were rather similar. Just as AMD said you don't need high memory bandwidth if your latencies are nothing, ATI said you don't need high memory bandwidth if your bus width is larger.
To me, it seems both companies are about efficiency.
Actually, I'm surprised AMD isn't doing what Intel did in the P4s. I kind of expected them to be dropping everything and focusing on ramping up their clock speeds. (Not to imply I want them to.)
 
If AMD brings back competition to the processor market, that's all I'd ask for. Imagine Intel and AMD clawing eachother the way NVIDIA and ATI do. A $300 processor selling for $140 just months after release.
 
If AMD brings back competition to the processor market, that's all I'd ask for. Imagine Intel and AMD clawing eachother the way NVIDIA and ATI do. A $300 processor selling for $140 just months after release.

To be honest, that's the only reason why I get up in the morning.:laugh:

AMD has managed to remain fairly competitive as far as price/performance goes. I'd love for them to take the performance crown again, but they need to play serious catch up.
 
If AMD brings back competition to the processor market, that's all I'd ask for. Imagine Intel and AMD clawing eachother the way NVIDIA and ATI do. A $300 processor selling for $140 just months after release.

thats all i want.
 
No it's not too much to ask......just a lot of patience is required! Sad thing is, I am an AMD fanboi and I have been running Intels now for 2 years :cry:
 

Intel scared of Nehalem? I doubt it. I've heard rumors that Nehalem do 15-20% better performance clock for clock over todays Core 2 Duos. Anandtech looked at an early sample a while back.

AMD's Shanghai is rumored to be finally catching up with the Core 2 series. Unless AMD pulls major improvements to their current architecture at the last minute, they're going to be just barely scraping by through Shanghai just like they did/are with K10.

AMD needs to do something crazy like they did when they said they were adding the IMC... Maybe.. Stream processors built in to the core? Either that or they're going to be doing everything they can to ramp up clock speeds (and it will the Pentium 4 all over again).

If AMD really expects Shanghai to blow Intel out of the water, I think they'd be shouting their heads off about how amazing it's going to be. Phenom wasn't amazing and they didn't say much then.
 
Last edited:
The phenom already catched up with Core 2 Duo 65nm, clock vs clock.
AMD's Shanghai suppose to catch up with Penryn.
 
  • Like
Reactions: xvi
The phenom already catched up with Core 2 Duo 65nm, clock vs clock.
AMD's Shanghai suppose to catch up with Penryn.

Dont you mean "Phenom has caught up with C2D/Quad, clock for clock in some applications".....as far as I can see, across the board, it still lags behind....like a full generation.....thats hardly (and sadly) a recommendation!
 
The mobile core Penryn? Do you mean Wolfdale?
 
The mobile core Penryn? Do you mean Wolfdale?

Well some people continue to be confused (understandably) with Intels nomenclature......codename for 45nm chips = Penyrn........then of course you do have the 2core Wolfdale and the 4core Yorkfield.......on Intels origional roadmap they did call the mobiles Penyrn still but I think that has changed since.
 
  • Like
Reactions: xvi
Intel :nutkick: AMD.
Nehalem won't have rivals, except Intel itselfs? :wtf:

If the projected pricing actually follows through, AMD better release the Deneb's at a REALLY nice price. I just can't see a 2.66GHz Nehalem going for $280-$290. More like $320-$330. Especially when the 2.9GHz Nehalem is projected at $560-$570. How much will a good quality X58 motherboard cost, $230-$240? Triple channel DDR3, at least $200. Add your other goods an your Nahelam build becomes expensive. A Wolfdale OC'ed with the latest video card will give you similar results at a much lower cost. But then again, we are talking about an entire new technology. So I guess the saying comes back into play. " You gotta pay to play with the big boys " .

If the Deneb's overclock like the Kentsfield does I will be satisfied for a while. The middle market is where most enthusiast's reside. Not everyone has $1,500 to build up a rig. If the Deneb's are as promising as us AMD fan's hope, a lot of quad core pursuiters will look into AMD products strictly because of cost. AMD/ATi does very well in the price per performance market.
 
Last edited:
Nehalem isn't going to be the greatest chip for us gamers/oc's. More for servers, video editors and such.

Heres a good article and a quote from that article.

"Nehalem is about improving HPC, Database, and virtualization performance, and much less about gaming performance. Maybe this will change once games get some heavy physics threads"

"With Nehalem they are getting a 32KB L1 with a 4 cycle latency, next a very small (compared to the older Intel CPUs) 256KB L2 cache with 12 cycle latency, and after that a pretty slow 40 cycle 8MB L3. When running on Penryn, they used to get a 3 cycle L1 and a 14 cycle 6144KB L2. The Penryn L2 is 24 times larger than on Nehalem!"

http://www.anandtech.com/weblog/showpost.aspx?i=480
 
I don't think it does lack behind far enough (0-5%) to call it slower.
AMD Phenom 65nm vs Intel Quad 65nm. (clock vs clock)
 
The Penryn L2 is 24 times larger than on Nehalem!"

Well, yeah, but the Nehalem L3 is literally infinitely times larger than Penryn's L3. The L2 was effectively pushed to L3 and a L2 was added. I think I saw somewhere that the L2 and L3 were shared? If that's true, I really don't see the point of having an L3 other than "AMD has one".

40 cycles to hit L3? No wonder why they decided they needed the IMC.
 
I don't know, thats why I am asking, if there is any.

Oh! Well, there's AMD Fusion which has been talked about for a long while. Nehalem claims to support a competitor to this, naturally.

I'm very sure ATi's line of motherboard chipsets have been tweaked beyond belief to further enhance AMD's processors. Afterall, what would work better with an AMD processor than an AMD chipset? This would give them an advantage where the hardware could be tuned to work well with each other rather than it just "play it safe".

Other than that, I wouldn't imagine there was anything big that either side gained from each other.
 
Actually, I find it funny that the company who's always been a step behind in instruction sets (SSE?) is now the same company telling nVidia that DirectX 10.1 actually is important.
DirectX 10.1 is not important. Seems games will be skipping it and going straight to DirectX 11 for multithreading ect ect. If it was important there would be more games to use it. The only game that did got its support taken out by a patch (Assassins Creed)
 
Without AMD we would have a 32bit Pentium 5 singlecore CPU at this point in time...
 
Back
Top