NVIDIA GeForce GT 640 OEM Rebrand vs ATI Radeon HD 2400 XT

VS

NVIDIA GeForce GT 640 OEM Rebrand

ATI Radeon HD 2400 XT

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 256MB VRAM ATI Radeon HD 2400 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages

Released 4 years and 10 months late

More VRAM (1536GB vs 256GB)

Larger VRAM bandwidth (38.40GB/s vs 8.000GB/s)

104 additional rendering cores

ATI Radeon HD 2400 XT 's Advantages

Lower TDP (25W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand +698%

0.415 TFLOPS

ATI Radeon HD 2400 XT

0.052 TFLOPS

GeForce GT 640 OEM Rebrand

VS

ATI Radeon HD 2400 XT

Graphics Card

Apr 2012

Release Date

Jun 2007

GeForce 600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

800 MHz

Memory Clock

500 MHz

Memory

1536MB

Memory Size

256MB

DDR3

Memory Type

GDDR3

192bit

Memory Bus

64bit

38.40GB/s

Bandwidth

8.000GB/s

Render Config

-

Compute Units

2

3

SM Count

-

144

Shading Units

40

24

TMUs

4

24

ROPs

4

-

64 KB (per SM)

L1 Cache

-

384 KB

L2 Cache

32 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

2.600 GPixel/s

17.28 GTexel/s

Texture Rate

2.600 GTexel/s

-

414.7 GFLOPS

FP32 (float)

52.00 GFLOPS

34.56 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

25W

250 W

Suggested PSU

200 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x VGA 1x S-Video

None

Power Connectors

None

Graphics Processor

GF116

GPU Name

RV610

GF116-150-A1

GPU Variant

RV610 PRO (215LKCAKA14FG)

Fermi 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

65 nm

1.17 billion

Transistors

0.18 billion

238 mm²

Die Size

85 mm²

Graphics Features

12 (11_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3

1.1

OpenCL

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

4.0

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