Home GPU Comparison NVIDIA GeForce GT 640 vs ATI Radeon HD 3470

NVIDIA GeForce GT 640 vs ATI Radeon HD 3470

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 256MB VRAM Radeon HD 3470 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages
Released 4 years and 5 months late
More VRAM (2GB vs 256GB)
Larger VRAM bandwidth (28.51GB/s vs 15.20GB/s)
344 additional rendering cores
ATI Radeon HD 3470 's Advantages
Lower TDP (30W vs 65W)

Score

Benchmark

FP32 (float)
GeForce GT 640 +982%
0.693 TFLOPS
Radeon HD 3470
0.064 TFLOPS
VS

Graphics Card

Jun 2012
Release Date
Jan 2008
GeForce 600
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
891 MHz
Memory Clock
950 MHz

Memory

2GB
Memory Size
256MB
DDR3
Memory Type
GDDR3
128bit
Memory Bus
64bit
28.51GB/s
Bandwidth
15.20GB/s

Render Config

-
Compute Units
2
-
-
-
384
Shading Units
40
32
TMUs
4
16
ROPs
4
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
-
256 KB
L2 Cache
64 KB
-
-
-

Theoretical Performance

7.216 GPixel/s
Pixel Rate
3.200 GPixel/s
28.86 GTexel/s
Texture Rate
3.200 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
64.00 GFLOPS
28.86 GFLOPS
FP64 (double)
-

Board Design

65W
TDP
30W
250 W
Suggested PSU
200 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x VGA 1x S-Video
None
Power Connectors
None

Graphics Processor

GK107
GPU Name
RV620
GK107-300-A2
GPU Variant
RV620 PRO (215-0670006)
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.27 billion
Transistors
0.181 billion
118 mm²
Die Size
67 mm²

Graphics Features

12 (11_0)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
N/A
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
4.1

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