ATI Radeon HD 4250 vs NVIDIA GeForce GT 640 Rev. 2

VS

ATI Radeon HD 4250

NVIDIA GeForce GT 640 Rev. 2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4250 and 1024MB VRAM GeForce GT 640 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4250 's Advantages

Lower TDP (25W vs 49W)

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Released 4 years and 3 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (40.06GB/s vs 6.336GB/s)

344 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4250

0.048 TFLOPS

GeForce GT 640 Rev. 2 +1572%

0.803 TFLOPS

Radeon HD 4250

VS

GeForce GT 640 Rev. 2

Graphics Card

Feb 2009

Release Date

May 2013

Radeon R600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x8

Clock Speeds

-

396 MHz

Memory Clock

1252 MHz

Memory

512MB

Memory Size

1024MB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

64bit

6.336GB/s

Bandwidth

40.06GB/s

Render Config

2

Compute Units

-

40

Shading Units

384

4

TMUs

32

4

ROPs

8

-

L1 Cache

16 KB (per SMX)

64 KB

L2 Cache

512 KB

-

Theoretical Performance

2.376 GPixel/s

Pixel Rate

8.368 GPixel/s

2.376 GTexel/s

Texture Rate

33.47 GTexel/s

-

47.52 GFLOPS

FP32 (float)

803.3 GFLOPS

-

FP64 (double)

33.47 GFLOPS

Board Design

25W

TDP

49W

200 W

Suggested PSU

200 W

1x DVI 1x VGA 1x S-Video

Outputs

1x DVI 1x HDMI 1.4a 1x VGA

None

Power Connectors

None

Graphics Processor

RV620

GPU Name

GK208

RV620 LE

GPU Variant

GK208-400-A1

TeraScale

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.181 billion

Transistors

1.02 billion

67 mm²

Die Size

87 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (11_0)

3.3

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.5

4.1

Shader Model

5.1

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