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GPU Comparison
NVIDIA GeForce GTX 660 vs ATI Radeon HD 5870
NVIDIA GeForce GTX 660 vs ATI Radeon HD 5870
VS
NVIDIA GeForce GTX 660
ATI Radeon HD 5870
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 and 1024MB VRAM Radeon HD 5870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 660 's Advantages
Released 3 years late
Boost Clock1032MHz
More VRAM (2GB vs 1GB)
Lower TDP (140W vs 188W)
ATI Radeon HD 5870 's Advantages
Larger VRAM bandwidth (153.6GB/s vs 144.2GB/s)
640 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 660
1.981 TFLOPS
Radeon HD 5870
+37%
2.72 TFLOPS
GeForce GTX 660
VS
Radeon HD 5870
Graphics Card
Sep 2012
Release Date
Sep 2009
GeForce 600
Generation
Evergreen
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
980 MHz
Base Clock
-
1032 MHz
Boost Clock
-
1502 MHz
Memory Clock
1200 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
256bit
144.2GB/s
Bandwidth
153.6GB/s
Render Config
-
SM Count
-
-
Compute Units
20
960
Shading Units
1600
80
TMUs
80
24
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
8 KB (per CU)
384 KB
L2 Cache
512 KB
Theoretical Performance
20.64 GPixel/s
Pixel Rate
27.20 GPixel/s
82.56 GTexel/s
Texture Rate
68.00 GTexel/s
-
FP16 (half)
-
1.981 TFLOPS
FP32 (float)
2.720 TFLOPS
82.56 GFLOPS
FP64 (double)
544.0 GFLOPS
Graphics Processor
GK106
GPU Name
Cypress
GK106-400-A1
GPU Variant
Cypress XT (215-0735033)
Kepler
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
2.54 billion
Transistors
2.154 billion
221 mm²
Die Size
334 mm²
Board Design
140W
TDP
188W
300 W
Suggested PSU
450 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
1x 6-pin
Power Connectors
2x 6-pin
Graphics Features
12 (11_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
5.0
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