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GPU Comparison
NVIDIA GeForce GTX 660 Rev. 2 vs ATI Radeon HD 4870
NVIDIA GeForce GTX 660 Rev. 2 vs ATI Radeon HD 4870
VS
NVIDIA GeForce GTX 660 Rev. 2
ATI Radeon HD 4870
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 512MB VRAM Radeon HD 4870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Released 6 years and 3 months late
Boost Clock1032MHz
Larger VRAM bandwidth (144.2GB/s vs 115.2GB/s)
160 additional rendering cores
Lower TDP (140W vs 150W)
Score
Benchmark
FP32 (float)
GeForce GTX 660 Rev. 2
+65%
1.981 TFLOPS
Radeon HD 4870
1.2 TFLOPS
GeForce GTX 660 Rev. 2
VS
Radeon HD 4870
Graphics Card
Sep 2014
Release Date
Jun 2008
GeForce 600
Generation
Radeon R700
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
900 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
256bit
144.2GB/s
Bandwidth
115.2GB/s
Render Config
-
SM Count
-
-
Compute Units
10
960
Shading Units
800
80
TMUs
40
24
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
256 KB
Theoretical Performance
20.64 GPixel/s
Pixel Rate
12.00 GPixel/s
82.56 GTexel/s
Texture Rate
30.00 GTexel/s
-
FP16 (half)
-
1.981 TFLOPS
FP32 (float)
1200 GFLOPS
82.56 GFLOPS
FP64 (double)
240.0 GFLOPS
Graphics Processor
GK104
GPU Name
RV770
-
GPU Variant
RV770 XT (215-0669049)
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
3.54 billion
Transistors
0.956 billion
294 mm²
Die Size
256 mm²
Board Design
140W
TDP
150W
300 W
Suggested PSU
450 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x S-Video
1x 6-pin
Power Connectors
2x 6-pin
Graphics Features
12 (11_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
4.1
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9
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