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GPU Comparison
AMD Radeon HD 6870 1600SP Edition vs NVIDIA GeForce GTX 660 OEM
AMD Radeon HD 6870 1600SP Edition vs NVIDIA GeForce GTX 660 OEM
VS
AMD Radeon HD 6870 1600SP Edition
NVIDIA GeForce GTX 660 OEM
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 1536MB VRAM GeForce GTX 660 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6870 1600SP Edition 's Advantages
448 additional rendering cores
NVIDIA GeForce GTX 660 OEM 's Advantages
Boost Clock888MHz
More VRAM (1536GB vs 1024GB)
Lower TDP (130W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 6870 1600SP Edition
+32%
2.72 TFLOPS
GeForce GTX 660 OEM
2.046 TFLOPS
Radeon HD 6870 1600SP Edition
VS
GeForce GTX 660 OEM
Graphics Card
Jan 2013
Release Date
Aug 2012
Northern Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
823 MHz
-
Boost Clock
888 MHz
1050 MHz
Memory Clock
1400 MHz
Memory
1024MB
Memory Size
1536MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
192bit
134.4GB/s
Bandwidth
134.4GB/s
Render Config
-
SM Count
-
20
Compute Units
-
1600
Shading Units
1152
80
TMUs
96
32
ROPs
24
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
384 KB
Theoretical Performance
27.20 GPixel/s
Pixel Rate
21.31 GPixel/s
68.00 GTexel/s
Texture Rate
85.25 GTexel/s
-
FP16 (half)
-
2.720 TFLOPS
FP32 (float)
2.046 TFLOPS
544.0 GFLOPS
FP64 (double)
85.25 GFLOPS
Graphics Processor
Cypress
GPU Name
GK104
Cypress XT (215-0735033)
GPU Variant
GK104-200-KD-A2
TeraScale 2
Architecture
Kepler
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
2.154 billion
Transistors
3.54 billion
334 mm²
Die Size
294 mm²
Board Design
175W
TDP
130W
450 W
Suggested PSU
300 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
2x 6-pin
Power Connectors
1x 6-pin
Graphics Features
11.2 (11_0)
DirectX
12 (11_0)
4.4
OpenGL
4.6
1.2
OpenCL
3.0
N/A
Vulkan
1.1
-
CUDA
3.0
5.0
Shader Model
5.1
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9
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