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GPU Comparison
AMD Radeon HD 7870 GHz Edition vs NVIDIA GeForce GTX 660 Rev. 2
AMD Radeon HD 7870 GHz Edition vs NVIDIA GeForce GTX 660 Rev. 2
VS
AMD Radeon HD 7870 GHz Edition
NVIDIA GeForce GTX 660 Rev. 2
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 2GB VRAM GeForce GTX 660 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7870 GHz Edition 's Advantages
Larger VRAM bandwidth (153.6GB/s vs 144.2GB/s)
320 additional rendering cores
NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Released 2 years and 6 months late
Boost Clock1032MHz
Lower TDP (140W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 GHz Edition
+29%
2.56 TFLOPS
GeForce GTX 660 Rev. 2
1.981 TFLOPS
Radeon HD 7870 GHz Edition
VS
GeForce GTX 660 Rev. 2
Graphics Card
Mar 2012
Release Date
Sep 2014
Southern Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
980 MHz
-
Boost Clock
1032 MHz
1200 MHz
Memory Clock
1502 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
192bit
153.6GB/s
Bandwidth
144.2GB/s
Render Config
-
SM Count
-
20
Compute Units
-
1280
Shading Units
960
80
TMUs
80
32
ROPs
24
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
384 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
20.64 GPixel/s
80.00 GTexel/s
Texture Rate
82.56 GTexel/s
-
FP16 (half)
-
2.560 TFLOPS
FP32 (float)
1.981 TFLOPS
160.0 GFLOPS
FP64 (double)
82.56 GFLOPS
Graphics Processor
Pitcairn
GPU Name
GK104
Pitcairn XT (215-0828047)
GPU Variant
-
GCN 1.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
2.8 billion
Transistors
3.54 billion
212 mm²
Die Size
294 mm²
Board Design
175W
TDP
140W
450 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
2x 6-pin
Power Connectors
1x 6-pin
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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