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GPU Comparison
NVIDIA GeForce GT 640 vs ATI Radeon HD 4860
NVIDIA GeForce GT 640 vs ATI Radeon HD 4860
VS
NVIDIA GeForce GT 640
ATI Radeon HD 4860
We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 512MB VRAM Radeon HD 4860 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640 's Advantages
Released 2 years and 9 months late
More VRAM (2GB vs 512GB)
Lower TDP (65W vs 130W)
ATI Radeon HD 4860 's Advantages
Larger VRAM bandwidth (96.00GB/s vs 28.51GB/s)
256 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640
0.693 TFLOPS
Radeon HD 4860
+29%
0.896 TFLOPS
GeForce GT 640
VS
Radeon HD 4860
Graphics Card
Jun 2012
Release Date
Sep 2009
GeForce 600
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
891 MHz
Memory Clock
750 MHz
Memory
2GB
Memory Size
512MB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
256bit
28.51GB/s
Bandwidth
96.00GB/s
Render Config
-
Compute Units
8
-
-
-
384
Shading Units
640
32
TMUs
32
16
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
7.216 GPixel/s
Pixel Rate
11.20 GPixel/s
28.86 GTexel/s
Texture Rate
22.40 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
896.0 GFLOPS
28.86 GFLOPS
FP64 (double)
179.2 GFLOPS
Board Design
65W
TDP
130W
250 W
Suggested PSU
300 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x S-Video
None
Power Connectors
2x 6-pin
Graphics Processor
GK107
GPU Name
RV790
GK107-300-A2
GPU Variant
RV790 GT
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.27 billion
Transistors
0.959 billion
118 mm²
Die Size
282 mm²
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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