NVIDIA GeForce GTX 660 OEM vs AMD Radeon HD 6970 X2
GPU · Specs Compare
Graphics Card
Release Date
Aug 2012
Unknown
Generation
GeForce 600
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
823 MHz
—
Boost Clock
888 MHz
—
Memory Clock
1400 MHz
1375 MHz
Memory
Memory Size
1536MB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
256bit
Bandwidth
134.4GB/s
176.0GB/s
Render Config
Shading Units
1152
1536
TMUs
96
96
ROPs
24
32
L1 Cache
16 KB (per SMX)
8 KB (per CU)
L2 Cache
384 KB
512 KB
Compute Units
—
24
Theoretical Performance
Pixel Rate
21.31 GPixel/s
28.16 GPixel/s
Texture Rate
85.25 GTexel/s
84.48 GTexel/s
FP32 (float)
2.046 TFLOPS
2.703 TFLOPS
FP64 (double)
85.25 GFLOPS
—
Graphics Processor
GPU Name
GK104
Antilles
GPU Variant
GK104-200-KD-A2
Antilles XT(215-0807027)
Architecture
Kepler
TeraScale 3
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
3.54 billion
2.64 billion
Die Size
294 mm²
389 mm²
Board Design
TDP
130W
375W
Suggested PSU
300 W
750 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
1x 6-pin
3x 8-pin
Graphics Features
DirectX
12 (11_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
3.0
1.2
Vulkan
1.1
N/A
CUDA
3.0
—
Shader Model
5.1
5.0
Benchmark
3DMark Time Spy
1,194
—
3DMark Time Spy Extreme
260
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.