Home GPU Comparison AMD Radeon HD 7970 GHz Edition vs NVIDIA GeForce GTX 660

AMD Radeon HD 7970 GHz Edition vs NVIDIA GeForce GTX 660

AMD Radeon HD 7970 GHz Edition
VS
NVIDIA GeForce GTX 660
AMD Radeon HD 7970 GHz Edition
NVIDIA GeForce GTX 660
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 GHz Edition and 2GB VRAM GeForce GTX 660 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970 GHz Edition 's Advantages
Boost Clock has increased by 2% (1050MHz vs 1032MHz)
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (288.0GB/s vs 144.2GB/s)
1088 additional rendering cores
NVIDIA GeForce GTX 660 's Advantages
Lower TDP (140W vs 300W)

Score

Benchmark

FP32 (float)
Radeon HD 7970 GHz Edition +117%
4.301 TFLOPS
GeForce GTX 660
1.981 TFLOPS
VS

Graphics Card

Jun 2012
Release Date
Sep 2012
Southern Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

1000 MHz
Base Clock
980 MHz
1050 MHz
Boost Clock
1032 MHz
1500 MHz
Memory Clock
1502 MHz

Memory

3GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
192bit
288.0GB/s
Bandwidth
144.2GB/s

Render Config

32
Compute Units
-
-
-
-
2048
Shading Units
960
128
TMUs
80
32
ROPs
24
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
768 KB
L2 Cache
384 KB
-
-
-

Theoretical Performance

33.60 GPixel/s
Pixel Rate
20.64 GPixel/s
134.4 GTexel/s
Texture Rate
82.56 GTexel/s
-
-
-
4.301 TFLOPS
FP32 (float)
1.981 TFLOPS
1075 GFLOPS
FP64 (double)
82.56 GFLOPS

Board Design

300W
TDP
140W
700 W
Suggested PSU
300 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
1x 6-pin

Graphics Processor

Tahiti
GPU Name
GK106
Tahiti XT2 (215-0821065)
GPU Variant
GK106-400-A1
GCN 1.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
2.54 billion
352 mm²
Die Size
221 mm²

Graphics Features

12 (11_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.2
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
5.1
Shader Model
5.1

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