AMD Radeon HD 6950 vs NVIDIA GeForce GTX 680
GPU Specs Compare
Graphics Card
Release Date
Dec 2010
Mar 2012
Generation
Northern Islands
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1250 MHz
1502 MHz
Base Clock
-
1006 MHz
Boost Clock
-
1058 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
160.0GB/s
192.3GB/s
Render Config
Compute Units
22
-
Shading Units
1408
1536
TMUs
88
128
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
25.60 GPixel/s
33.86 GPixel/s
Texture Rate
70.40 GTexel/s
135.4 GTexel/s
FP32 (float)
2.253 TFLOPS
3.250 TFLOPS
FP64 (double)
563.2 GFLOPS
135.4 GFLOPS
Graphics Processor
GPU Name
Cayman
GK104
GPU Variant
Cayman PRO(215-0807019)
GK104-400-A2
Architecture
TeraScale 3
Kepler
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
2.64 billion
3.54 billion
Die Size
389 mm²
294 mm²
Board Design
TDP
200W
195W
Suggested PSU
550 W
450 W
Outputs
2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
2x 6-pin
2x 6-pin
Graphics Features
DirectX
11.2 (11_0)
12 (11_0)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.2.175
Shader Model
5.0
6.5 (5.1)
CUDA
-
3.0