Home GPU Comparison NVIDIA GeForce GT 640 vs ATI Radeon HD 5950

NVIDIA GeForce GT 640 vs ATI Radeon HD 5950

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1024MB VRAM ATI Radeon HD 5950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages
More VRAM (2GB vs 1024GB)
Lower TDP (65W vs 302W)
ATI Radeon HD 5950 's Advantages
Larger VRAM bandwidth (128.0GB/s vs 28.51GB/s)
1056 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GT 640
0.693 TFLOPS
ATI Radeon HD 5950 +201%
2.088 TFLOPS
VS

Graphics Card

Jun 2012
Release Date
Unknown
GeForce 600
Generation
Evergreen
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
891 MHz
Memory Clock
1000 MHz

Memory

2GB
Memory Size
1024MB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
256bit
28.51GB/s
Bandwidth
128.0GB/s

Render Config

-
Compute Units
18
-
-
-
384
Shading Units
1440
32
TMUs
72
16
ROPs
32
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

7.216 GPixel/s
Pixel Rate
23.20 GPixel/s
28.86 GTexel/s
Texture Rate
52.20 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
2.088 TFLOPS
28.86 GFLOPS
FP64 (double)
-

Board Design

65W
TDP
302W
250 W
Suggested PSU
700 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
None
Power Connectors
1x 6-pin + 1x 8-pin

Graphics Processor

GK107
GPU Name
Hemlock
GK107-300-A2
GPU Variant
Hemlock PRO
Kepler
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
2.154 billion
118 mm²
Die Size
334 mm²

Graphics Features

12 (11_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
5.0

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