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GPU Comparison
NVIDIA GeForce GT 640 OEM vs ATI Radeon HD 4850 X2
NVIDIA GeForce GT 640 OEM vs ATI Radeon HD 4850 X2
VS
NVIDIA GeForce GT 640 OEM
ATI Radeon HD 4850 X2
We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 OEM and 512MB VRAM Radeon HD 4850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640 OEM 's Advantages
Released 3 years and 5 months late
Lower TDP (50W vs 250W)
ATI Radeon HD 4850 X2 's Advantages
Larger VRAM bandwidth (63.68GB/s vs 28.51GB/s)
416 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 640 OEM
0.612 TFLOPS
Radeon HD 4850 X2
+63%
1 TFLOPS
GeForce GT 640 OEM
VS
Radeon HD 4850 X2
Graphics Card
Apr 2012
Release Date
Nov 2008
GeForce 600
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
891 MHz
Memory Clock
995 MHz
Memory
2GB
Memory Size
512MB
DDR3
Memory Type
GDDR3
128bit
Memory Bus
256bit
28.51GB/s
Bandwidth
63.68GB/s
Render Config
-
SM Count
-
-
Compute Units
10
384
Shading Units
800
32
TMUs
40
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
Theoretical Performance
6.376 GPixel/s
Pixel Rate
10.00 GPixel/s
25.50 GTexel/s
Texture Rate
25.00 GTexel/s
-
FP16 (half)
-
612.1 GFLOPS
FP32 (float)
1000 GFLOPS
25.50 GFLOPS
FP64 (double)
200.0 GFLOPS
Graphics Processor
GK107
GPU Name
R700
GK107-320-A2
GPU Variant
R700 PRO (215-0669065)
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.27 billion
Transistors
0.956 billion
118 mm²
Die Size
256 mm²
Board Design
50W
TDP
250W
250 W
Suggested PSU
600 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
4x DVI 1x S-Video
None
Power Connectors
1x 6-pin + 1x 8-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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