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

AMD Radeon HD 7900 ''Tahiti'' Pictured, 384-bit Memory Bus Confirmed?

cadaveca

My name is Dave
Joined
Apr 10, 2006
Messages
17,232 (2.63/day)
It's 2 x 6 pin dude, although having said that the card underneath is 8 and 6.

Um, that's not what I see(I see 8+6 in both cards, and pinout for 8x8):

power.jpg
 
Last edited by a moderator:
Joined
Jan 2, 2009
Messages
9,899 (1.78/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
Joined
Feb 24, 2009
Messages
3,516 (0.64/day)
System Name Money Hole
Processor Core i7 970
Motherboard Asus P6T6 WS Revolution
Cooling Noctua UH-D14
Memory 2133Mhz 12GB (3x4GB) Mushkin 998991
Video Card(s) Sapphire Tri-X OC R9 290X
Storage Samsung 1TB 850 Evo
Display(s) 3x Acer KG240A 144hz
Case CM HAF 932
Audio Device(s) ADI (onboard)
Power Supply Enermax Revolution 85+ 1050w
Mouse Logitech G602
Keyboard Logitech G710+
Software Windows 10 Professional x64

cadaveca

My name is Dave
Joined
Apr 10, 2006
Messages
17,232 (2.63/day)
Whatever it is, it's dman exciting. Seeing cards now...does that mean we get a launch within weeks? One can hope...
 
Joined
Apr 19, 2011
Messages
2,198 (0.46/day)
Location
So. Cal.
that "Tahiti-XDR2" rumor
Me think's... AMD will hold that and refine it until the top Shelf Kepler's come. Either the XDR2 designation to the existing 7970 or a new model. Consider if they wait... could they release both a Single and Dual XDR2 :rolleyes:
That might send Kepler packing... :nutkick:
 

Solaris17

Super Dainty Moderator
Staff member
Joined
Aug 16, 2005
Messages
25,774 (3.79/day)
Location
Alabama
System Name Rocinante
Processor I9 14900KS
Motherboard EVGA z690 Dark KINGPIN (modded BIOS)
Cooling EK-AIO Elite 360 D-RGB
Memory 64GB Gskill Trident Z5 DDR5 6000 @6400
Video Card(s) MSI SUPRIM Liquid X 4090
Storage 1x 500GB 980 Pro | 1x 1TB 980 Pro | 1x 8TB Corsair MP400
Display(s) Odyssey OLED G9 G95SC
Case Lian Li o11 Evo Dynamic White
Audio Device(s) Moondrop S8's on Schiit Hel 2e
Power Supply Bequiet! Power Pro 12 1500w
Mouse Lamzu Atlantis mini (White)
Keyboard Monsgeek M3 Lavender, Akko Crystal Blues
VR HMD Quest 3
Software Windows 11
Benchmark Scores I dont have time for that.
Maybe we could discuss memory mapping in another thread?

If you two like, I can spin related posts from this thread off into a new thread in the GPU forum.

So basically your going to change the address space?
 

btarunr

Editor & Senior Moderator
Staff member
Joined
Oct 9, 2007
Messages
46,276 (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
So basically your going to change the address space?

No, pressing buttons that change the "t=" value of those posts in the database.

Back to topic.
 
Joined
May 21, 2008
Messages
4,113 (0.71/day)
Location
Iowa, USA
System Name THE CUBE 2.0
Processor Intel i5 13600k
Motherboard MSI MPG Z690 EDGE DDR4
Cooling Phanteks PH-TC14PE BK 2x T30-120 Fan mod mount
Memory G.Skill TridentZ 3200 MT/s C15 32GB 2x16GB
Video Card(s) Gigabyte Aorus 1080 Ti 11GB OC: Core 2GHz, Mem 5.7GHz
Storage WD SN770 250GB / 3x WD SN850X 2TB / Toshiba X300 4TB / 2x RAID1 Toshiba P300 3TB
Display(s) Samsung 49" Odyssey OLED G95SC 240Hz 5120 x 1440
Case "THE CUBE" Custom built, pure Red Alder wood
Audio Device(s) Beyerdynamic DT 880
Power Supply Corsair RM1000X
Mouse Logitech G700
Keyboard Logitech G910
Software Windows 11 Pro
It is 2x 8pin you can tell from the solder points. Now who know you may only need 1x 8 1x 6 to be able to run them.

How long do you think these are they look like they are slightly longer than that M/B so maybe 9.5 -10"?




Lets play a game name those other parts we have
ASUS Crosshair V Formula AM3+ AMD 990FX SATA 6Gb/s...
SanDisk Ultra SDSSDH-120G-G25 2.5" 120GB SATA II I...
CORSAIR Enthusiast Series TX850 V2 850W ATX12V v2....
Just can't figure out the ram or that case maybe a Corsair Obsidian Series 650D (CC650DW-1) Black Ste... hard to tell basing it off a couple screws I can see.
 
Last edited:
Joined
Dec 2, 2009
Messages
3,351 (0.64/day)
System Name Dark Stealth
Processor Ryzen 5 5600x
Motherboard Gigabyte B450M Gaming rev 1.0
Cooling Snowman, arctic p12 x2 fans
Memory 16x2 DDR4 Corsair Dominator Pro
Video Card(s) 3080 10gb
Storage 2TB NVME PCIE 4.0 Crucial P3 Plus, 1TB Crucial MX500 SSD, 4TB WD RED HDD
Display(s) HP Omen 34c (34" monitor 3440x1440 165Hz VA panel)
Case Zalman S2
Power Supply Corsair 750TX
Mouse Logitech pro superlight, mx mouse s3, Razer Basiliskx with battery
Keyboard Custom mechanical keyboard tm680
Software Windows 11
Benchmark Scores 70-80 fps 3440x1440 on cyberpunk 2077 max settings
From what i know they will make high end parts with xdr2 vram
so this is not a high end part. If it is, than there will be no xdr2 vram
 
Joined
Jul 19, 2006
Messages
43,585 (6.74/day)
Processor AMD Ryzen 7 7800X3D
Motherboard ASUS TUF x670e
Cooling EK AIO 360. Phantek T30 fans.
Memory 32GB G.Skill 6000Mhz
Video Card(s) Asus RTX 4090
Storage WD m.2
Display(s) LG C2 Evo OLED 42"
Case Lian Li PC 011 Dynamic Evo
Audio Device(s) Topping E70 DAC, SMSL SP200 Headphone Amp.
Power Supply FSP Hydro Ti PRO 1000W
Mouse Razer Basilisk V3 Pro
Keyboard Tester84
Software Windows 11
I doubt the final card will have two 8 pin adapters. Both Cayman and Cypress had two 8 pins on their "engineering samples".
 

Solaris17

Super Dainty Moderator
Staff member
Joined
Aug 16, 2005
Messages
25,774 (3.79/day)
Location
Alabama
System Name Rocinante
Processor I9 14900KS
Motherboard EVGA z690 Dark KINGPIN (modded BIOS)
Cooling EK-AIO Elite 360 D-RGB
Memory 64GB Gskill Trident Z5 DDR5 6000 @6400
Video Card(s) MSI SUPRIM Liquid X 4090
Storage 1x 500GB 980 Pro | 1x 1TB 980 Pro | 1x 8TB Corsair MP400
Display(s) Odyssey OLED G9 G95SC
Case Lian Li o11 Evo Dynamic White
Audio Device(s) Moondrop S8's on Schiit Hel 2e
Power Supply Bequiet! Power Pro 12 1500w
Mouse Lamzu Atlantis mini (White)
Keyboard Monsgeek M3 Lavender, Akko Crystal Blues
VR HMD Quest 3
Software Windows 11
Benchmark Scores I dont have time for that.
I doubt the final card will have two 8 pin adapters. Both Cayman and Cypress had two 8 pins on their "engineering samples".

I agree if anything they did it so they could beat the ES cards to get an idea of theoretical performance instead of basing it off of computer models.
 
Joined
Mar 27, 2008
Messages
697 (0.12/day)
Location
Zagreb, Croatia
Processor C2D E8400@3.9GHz (488x8, 1.4v :( )
Motherboard Abit IP35-E
Cooling Thermaltake Sonic Tower+120mm fan
Memory 2GB kingmax ddr1066@976MHz 5-5-5-15
Video Card(s) Radeon X1800GTO @700/1400MHz with Accelero S1+Glacialtech fancard
Storage 2xSeagate Barracuda 7200.10 160GB
Display(s) Samsung SyncMaster 793s... just you laugh...
Case some Aplus case
Audio Device(s) Realtek ALC888
Power Supply Chieftec 450W
Software Win7 x64
just wanted to say that that's a f*cking awkward place for a 12th memory chip, especially since it's right between the gpu and pcie connector and there seems to be plenty of room on the other end of the "ring".
 

btarunr

Editor & Senior Moderator
Staff member
Joined
Oct 9, 2007
Messages
46,276 (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
just wanted to say that that's a f*cking awkward place for a 12th memory chip, especially since it's right between the gpu and pcie connector and there seems to be plenty of room on the other end of the "ring".

As if placing VRM near display outputs wasn't awkward enough (on HD 6800 series reference boards). It doesn't matter.
 
Joined
Jan 7, 2008
Messages
3,924 (0.66/day)
System Name Main / Home Media Serever
Processor Intel i5 2500k @ 4.75ghz / AMD AM3 5200+ x2
Motherboard ASRock Fatal1ty P67 Performance / Biostar 790GX
Cooling Xigmatek Dark Knight / XIGMATEK Apache
Memory 12gb of G.Skill Value Series DDR3 / 4x 1gb DDR2
Video Card(s) XFX Radeon 6870 1gb / Asus Radeon 5450 512mb
Storage 2x Samsung 830 64gb SSD Raid 0 & 750gb WD Blue HDD / OCZ Vertex II 80GB & 10TB of HDD Space
Display(s) 2x Acer 24" LED / Samsung 50" LED
Case Xigmatek Asgard II / APEX PC-389-C
Power Supply Rosewill 750w / Antec EArthwatts 380w
Software Windows 7 Professional x64 SP1 / Ubuntu 14.04
Very nice. Do want!
 
Joined
Mar 27, 2008
Messages
697 (0.12/day)
Location
Zagreb, Croatia
Processor C2D E8400@3.9GHz (488x8, 1.4v :( )
Motherboard Abit IP35-E
Cooling Thermaltake Sonic Tower+120mm fan
Memory 2GB kingmax ddr1066@976MHz 5-5-5-15
Video Card(s) Radeon X1800GTO @700/1400MHz with Accelero S1+Glacialtech fancard
Storage 2xSeagate Barracuda 7200.10 160GB
Display(s) Samsung SyncMaster 793s... just you laugh...
Case some Aplus case
Audio Device(s) Realtek ALC888
Power Supply Chieftec 450W
Software Win7 x64
As if placing VRM near display outputs wasn't awkward enough (on HD 6800 series reference boards). It doesn't matter.

thb i never even saw that. seems that crosstalk and other interference are no longer an issue which is nice but one chip so close must have smaller latency than the others, i wonder how they've handled that. i know there are a lot of wavy traces going from memory chips on my x1800.
 

WarraWarra

New Member
Joined
Nov 23, 2010
Messages
268 (0.05/day)
So vram only on one side of the card ?? surely they have vram on both sides of the card or 2x 12 capable ram chip places ??
Would be a waste to have ram on the back side, no cooling for it and only gpu on front under the cooling system.

If they follow the same as with the mGPU's then the top of the range gaming ones has xdr memory in either 2GB/4GB versions.
 
Joined
Oct 26, 2011
Messages
3,145 (0.69/day)
Processor 8700k Intel
Motherboard z370 MSI Godlike Gaming
Cooling Triple Aquacomputer AMS Copper 840 with D5
Memory TridentZ RGB G.Skill C16 3600MHz
Video Card(s) GTX 1080 Ti
Storage Crucial MX SSDs
Display(s) Dell U3011 2560x1600 + Dell 2408WFP 1200x1920 (Portrait)
Case Core P5 Thermaltake
Audio Device(s) Essence STX
Power Supply AX 1500i
Mouse Logitech
Keyboard Corsair
Software Win10
GDDR5 doesn't need that much cooling, my 6990s have some ram on the back of the pcb and they've never had any problem even at 1450mhz.
What's really toasty is the GPU and VRMs
 
Joined
Jan 17, 2009
Messages
2,143 (0.39/day)
System Name THE MAD BEAST!!!
Processor Tinfoil rapper with some coathangers
Motherboard Graham cracker with with frosting
Cooling A shovel full of snow
Memory Grey matter out of a corpse
Video Card(s) Cat eyes
Storage A whales brain
Display(s) Cyclops eyeball
Case Inside a yetis hollowed out corpse
Audio Device(s) howling banchee
Power Supply 32 hamster on a massive wheel
Software WHo needs software when you have a box of kittens
Benchmark Scores IS gatrillions a number?
i seen the supposid specs on these cards, apprently extremly nice, ill pick up 2 when it comes out. to replace my 2 6870's that will be sold at that time
 
Joined
Jul 19, 2006
Messages
43,585 (6.74/day)
Processor AMD Ryzen 7 7800X3D
Motherboard ASUS TUF x670e
Cooling EK AIO 360. Phantek T30 fans.
Memory 32GB G.Skill 6000Mhz
Video Card(s) Asus RTX 4090
Storage WD m.2
Display(s) LG C2 Evo OLED 42"
Case Lian Li PC 011 Dynamic Evo
Audio Device(s) Topping E70 DAC, SMSL SP200 Headphone Amp.
Power Supply FSP Hydro Ti PRO 1000W
Mouse Razer Basilisk V3 Pro
Keyboard Tester84
Software Windows 11
Looks and feels cheap! Where is the back plate?

Since there's no components on the backside a backplate isn't needed. I'd rather not have a backplate trapping heat on the PCB anyways. It's also an engineering sample. Cayman's ES didn't have a backplate either, the retail 6970 did.
 
Joined
Apr 30, 2008
Messages
4,875 (0.84/day)
Location
Multidimensional
System Name Boomer Master Race
Processor AMD Ryzen 7 7800X3D 4.2Ghz - 5Ghz CPU
Motherboard MSI B650I Edge Wifi ITX Motherboard
Cooling CM 280mm AIO + 2x 120mm Slim fans
Memory G.Skill Trident Z5 Neo 32GB 6000MHz
Video Card(s) Galax RTX 4060 8GB (Temporary Until Next Gen)
Storage Kingston KC3000 M.2 1TB + 2TB HDD
Display(s) Asus TUF 24Inch 165Hz || AOC 24Inch 180Hz
Case Cooler Master NR200P Max TG ITX Case
Audio Device(s) Built In Realtek Digital Audio HD
Power Supply CoolerMaster V850 SFX Gold 850W PSU
Mouse Logitech G203 Lightsync
Keyboard Atrix RGB Slim Keyboard
VR HMD ( ◔ ʖ̯ ◔ )
Software Windows 10 Home 64bit
Benchmark Scores Don't do them anymore.
XDR2 memory could be used for an eyefinity HD7970 version ^_^
 
Joined
Oct 26, 2011
Messages
3,145 (0.69/day)
Processor 8700k Intel
Motherboard z370 MSI Godlike Gaming
Cooling Triple Aquacomputer AMS Copper 840 with D5
Memory TridentZ RGB G.Skill C16 3600MHz
Video Card(s) GTX 1080 Ti
Storage Crucial MX SSDs
Display(s) Dell U3011 2560x1600 + Dell 2408WFP 1200x1920 (Portrait)
Case Core P5 Thermaltake
Audio Device(s) Essence STX
Power Supply AX 1500i
Mouse Logitech
Keyboard Corsair
Software Win10
Also as an exclusive on the 7990 to gain more bandwidth?
 
Joined
Aug 19, 2011
Messages
528 (0.11/day)
System Name As Himself
Processor 2700X
Motherboard Asrock 370X ThaiChi
Cooling Custom Liquid
Memory 4133MHz Team
Video Card(s) Radeon VII
Storage Samsung 512 SSD's
Display(s) Asus "24 144Hz
Case Tt P5
Audio Device(s) Asus Essence One Muses/Sparkos
Power Supply EVGA 1200
Mouse RAT ProX
Keyboard Drop CTRL
Software W10 steam futuremark
Looks and feels cheap! Where is the back plate?

what are you smokin???

i think it looks like they're goin back to a 5XXX style design.....LOVE IT
 
Joined
Nov 18, 2011
Messages
124 (0.03/day)
Location
Toronto, Canada
Processor Intel Atom 270
Cooling Passive
Memory 2GB DDR3-1333
Storage 160GB WD 2.5"
Case Custom
Power Supply Seasonic-Passive
*drooling on myself*

8-pin might be for pushing clocks? Looks power hungry but that won't stop me from buying it.
 
Top