AMD Radeon HD 6850 vs ATI Radeon HD 4250

VS

AMD Radeon HD 6850

ATI Radeon HD 4250

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6850 and 512MB VRAM Radeon HD 4250 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6850 's Advantages

Released 1 years and 8 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (128.0GB/s vs 6.336GB/s)

920 additional rendering cores

ATI Radeon HD 4250 's Advantages

Lower TDP (25W vs 127W)

Score

Benchmark

FP32 (float)

Radeon HD 6850 +3000%

1.488 TFLOPS

Radeon HD 4250

0.048 TFLOPS

Radeon HD 6850

VS

Radeon HD 4250

Graphics Card

Oct 2010

Release Date

Feb 2009

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

396 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

128.0GB/s

Bandwidth

6.336GB/s

Render Config

12

Compute Units

2

-

960

Shading Units

40

48

TMUs

4

32

ROPs

4

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

64 KB

-

Theoretical Performance

24.80 GPixel/s

Pixel Rate

2.376 GPixel/s

37.20 GTexel/s

Texture Rate

2.376 GTexel/s

-

1488 GFLOPS

FP32 (float)

47.52 GFLOPS

-

Board Design

127W

TDP

25W

300 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

1x DVI 1x VGA 1x S-Video

1x 6-pin

Power Connectors

None

Graphics Processor

Barts

GPU Name

RV620

Barts PRO (215-0798006)

GPU Variant

RV620 LE

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

1.7 billion

Transistors

0.181 billion

255 mm²

Die Size

67 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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