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AMD Radeon HD 7950
Graphics Processor
Tahiti
Cores
1792
TMUs
112
ROPs
32
Memory Size
3 GB
Memory Type
GDDR5
Bus Width
384 bit
GPU
I/O
Top
PCB Front
PCB Back
Recommended Gaming Resolutions:
1600x900
1920x1080
2560x1440
The Radeon HD 7950 was a high-end graphics card by AMD, launched on January 31st, 2012. Built on the 28 nm process, and based on the Tahiti graphics processor, in its Tahiti PRO variant, the card supports DirectX 12. Even though it supports DirectX 12, the feature level is only 11_1, which can be problematic with newer DirectX 12 titles. The Tahiti graphics processor is a large chip with a die area of 352 mm² and 4,313 million transistors. Unlike the fully unlocked Radeon HD 7970, which uses the same GPU but has all 2048 shaders enabled, AMD has disabled some shading units on the Radeon HD 7950 to reach the product's target shader count. It features 1792 shading units, 112 texture mapping units, and 32 ROPs. AMD has paired 3,072 MB GDDR5 memory with the Radeon HD 7950, which are connected using a 384-bit memory interface. The GPU is operating at a frequency of 800 MHz, memory is running at 1250 MHz (5 Gbps effective). Being a dual-slot card, the AMD Radeon HD 7950 draws power from 2x 6-pin power connectors, with power draw rated at 200 W maximum. Display outputs include: 1x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2. Radeon HD 7950 is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card's dimensions are 278 mm x 111 mm x 38 mm, and it features a dual-slot cooling solution. Its price at launch was 449 US Dollars.
Graphics Processor
GPU Name
Tahiti
GPU Variant
Tahiti PRO
(215-0821056)
Architecture
GCN 1.0
Foundry
TSMC
Process Size
28 nm
Transistors
4,313 million
Density
12.3M / mm²
Die Size
352 mm²
Clock Speeds
GPU Clock
800 MHz
Memory Clock
1250 MHz
5 Gbps effective
Memory
Memory Size
3 GB
Memory Type
GDDR5
Memory Bus
384 bit
Bandwidth
240.0 GB/s
Render Config
Shading Units
1792
TMUs
112
ROPs
32
Compute Units
28
L1 Cache
16 KB (per CU)
L2 Cache
768 KB
Theoretical Performance
Pixel Rate
25.60 GPixel/s
Texture Rate
89.60 GTexel/s
FP32 (float)
2.867 TFLOPS
FP64 (double)
716.8 GFLOPS (1:4)
Board Design
Slot Width
Dual-slot
Length
278 mm
10.9 inches
Width
111 mm
4.4 inches
Height
38 mm
1.5 inches
TDP
200 W
Suggested PSU
550 W
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Power Connectors
2x 6-pin
Board Number
109-C38637-00
Graphics Features
DirectX
12 (11_1)
OpenGL
4.6
OpenCL
2.1 (1.2)
Vulkan
1.2.170
Shader Model
6.5 (5.1)
Tahiti GPU Notes
Generation: Southern Islands
Desktop Variant: New Zealand / Malta
Graphics/Compute: GFX6 (gfx600)
Display Core Engine: 6.0
Unified Video Decoder: 3.2
Video Compression Engine: 1.0
CLRX: GCN 1.0
Exact Transistor Count: 4,312,711,873
Latest Drivers:
Windows XP / 8:
Catalyst Software Suite 14.4
Windows Vista :
Catalyst Software Suite 13.12
Windows 7:
32-bit: Radeon Software: Adrenalin Edition 18.9.3
64-bit: AMD Software: Adrenalin Edition 22.6.1
Windows 8.1:
32-bit: Radeon Software: Crimson ReLive Edition 16.12.2 / 17.1.2
64-bit: Radeon Software: Crimson ReLive Edition 17.4.4 / 17.7.1
Windows 10:
32-bit: Radeon Software: Adrenalin Edition 18.9.3
64-bit: AMD Software: Adrenalin Edition 22.6.1
Retail boards
based on this design (36)
Name
GPU Clock
Memory Clock
Other Changes
800 MHz
1250 MHz
800 MHz
1250 MHz
800 MHz
1250 MHz
300 mm/11.8 inches, Triple-slot
900 MHz
1250 MHz
300 mm/11.8 inches, Triple-slot
900 MHz
1250 MHz
279 mm/11 inches, Triple-slot, 2x DVI 1x HDMI 1x DisplayPort
800 MHz
1250 MHz
279 mm/11 inches, Triple-slot, 2x DVI 1x HDMI 1x DisplayPort
800 MHz
1250 MHz
850 MHz
1250 MHz
268 mm/10.6 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
800 MHz
1250 MHz
268 mm/10.6 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
900 MHz
1250 MHz
285 mm/11.2 inches
1000 MHz
1250 MHz
285 mm/11.2 inches
800 MHz
1250 MHz
800 MHz
1250 MHz
295 mm/11.6 inches
900 MHz
1250 MHz
295 mm/11.6 inches
800 MHz
1250 MHz
292 mm/11.5 inches
800 MHz
1250 MHz
2x DVI 1x HDMI 2x mini-DisplayPort
800 MHz
1250 MHz
830 MHz
1250 MHz
830 MHz
1250 MHz
270 mm/10.6 inches
800 MHz
1250 MHz
261 mm/10.3 inches
880 MHz
1250 MHz
261 mm/10.3 inches
800 MHz
1250 MHz
265 mm/10.4 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
880 MHz
1250 MHz
275 mm/10.8 inches
810 MHz
1250 MHz
265 mm/10.4 inches, 1x DVI 1x HDMI 2x mini-DisplayPort
860 MHz
1250 MHz
290 mm/11.4 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
900 MHz
1250 MHz
275 mm/10.8 inches
950 MHz
1250 MHz
280 mm/11 inches
950 MHz
1250 MHz
280 mm/11 inches
800 MHz
1250 MHz
880 MHz
1250 MHz
800 MHz
1250 MHz
800 MHz
1250 MHz
274 mm/10.8 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
900 MHz
1375 MHz
800 MHz
1250 MHz
900 MHz
1375 MHz
800 MHz
1250 MHz
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