NVIDIA GeForce GT 640 vs ATI Radeon HD 2400

VS

NVIDIA GeForce GT 640

ATI Radeon HD 2400

We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 256MB VRAM ATI Radeon HD 2400 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 4 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (28.51GB/s vs 7.920GB/s)

344 additional rendering cores

ATI Radeon HD 2400 's Advantages

Lower TDP (20W vs 65W)

Score

Benchmark

FP32 (float)

GeForce GT 640 +2065%

0.693 TFLOPS

ATI Radeon HD 2400

0.032 TFLOPS

GeForce GT 640

VS

ATI Radeon HD 2400

Graphics Card

Jun 2012

Release Date

Feb 2008

GeForce 600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

891 MHz

Memory Clock

495 MHz

Memory

2GB

Memory Size

256MB

DDR3

Memory Type

DDR2

128bit

Memory Bus

64bit

28.51GB/s

Bandwidth

7.920GB/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

32 KB

-

Theoretical Performance

7.216 GPixel/s

Pixel Rate

1.592 GPixel/s

28.86 GTexel/s

Texture Rate

1.592 GTexel/s

-

692.7 GFLOPS

FP32 (float)

31.84 GFLOPS

28.86 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

20W

250 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

Outputs

1x DVI 1x S-Video

None

Power Connectors

None

Graphics Processor

GK107

GPU Name

RV610

GK107-300-A2

GPU Variant

-

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

65 nm

1.27 billion

Transistors

0.18 billion

118 mm²

Die Size

85 mm²

Graphics Features

12 (11_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.0

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