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GPU Comparison
AMD Radeon Sky 700 vs NVIDIA GeForce GT 640 OEM
AMD Radeon Sky 700 vs NVIDIA GeForce GT 640 OEM
VS
AMD Radeon Sky 700
NVIDIA GeForce GT 640 OEM
We compared two Desktop platform GPUs: 6GB VRAM Radeon Sky 700 and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Sky 700 's Advantages
Released 11 months late
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (264.0GB/s vs 28.51GB/s)
1408 additional rendering cores
NVIDIA GeForce GT 640 OEM 's Advantages
Lower TDP (50W vs 225W)
Score
Benchmark
FP32 (float)
Radeon Sky 700
+427%
3.226 TFLOPS
GeForce GT 640 OEM
0.612 TFLOPS
Radeon Sky 700
VS
GeForce GT 640 OEM
Graphics Card
Mar 2013
Release Date
Apr 2012
Radeon Sky
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1375 MHz
Memory Clock
891 MHz
Memory
6GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
384bit
Memory Bus
128bit
264.0GB/s
Bandwidth
28.51GB/s
Render Config
-
SM Count
-
28
Compute Units
-
1792
Shading Units
384
112
TMUs
32
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
768 KB
L2 Cache
256 KB
Theoretical Performance
28.80 GPixel/s
Pixel Rate
6.376 GPixel/s
100.8 GTexel/s
Texture Rate
25.50 GTexel/s
-
FP16 (half)
-
3.226 TFLOPS
FP32 (float)
612.1 GFLOPS
806.4 GFLOPS
FP64 (double)
25.50 GFLOPS
Graphics Processor
Tahiti
GPU Name
GK107
Tahiti PRO GL
GPU Variant
GK107-320-A2
GCN 1.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
1.27 billion
352 mm²
Die Size
118 mm²
Board Design
225W
TDP
50W
550 W
Suggested PSU
250 W
1x DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 8-pin
Power Connectors
None
Graphics Features
12 (11_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
1.2
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
5.1
Shader Model
5.1
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