Home GPU Comparison NVIDIA GeForce GT 640 vs ATI Radeon HD 4670

NVIDIA GeForce GT 640 vs ATI Radeon HD 4670

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 512MB VRAM Radeon HD 4670 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 's Advantages
Released 3 years and 9 months late
More VRAM (2GB vs 512GB)
64 additional rendering cores
ATI Radeon HD 4670 's Advantages
Larger VRAM bandwidth (32.00GB/s vs 28.51GB/s)
Lower TDP (59W vs 65W)

Score

Benchmark

FP32 (float)
GeForce GT 640 +44%
0.693 TFLOPS
Radeon HD 4670
0.48 TFLOPS
VS

Graphics Card

Jun 2012
Release Date
Sep 2008
GeForce 600
Generation
Radeon R700
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
512MB
DDR3
Memory Type
GDDR3
128bit
Memory Bus
128bit
28.51GB/s
Bandwidth
32.00GB/s

Render Config

-
Compute Units
4
-
-
-
384
Shading Units
320
32
TMUs
32
16
ROPs
8
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

7.216 GPixel/s
Pixel Rate
6.000 GPixel/s
28.86 GTexel/s
Texture Rate
24.00 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
480.0 GFLOPS
28.86 GFLOPS
FP64 (double)
-

Board Design

65W
TDP
59W
250 W
Suggested PSU
250 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
2x DVI 1x S-Video
None
Power Connectors
None

Graphics Processor

GK107
GPU Name
RV730
GK107-300-A2
GPU Variant
RV730 XT (215-0719047)
Kepler
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
1.27 billion
Transistors
0.514 billion
118 mm²
Die Size
146 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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