AMD Radeon HD 6790 vs ATI Radeon HD 4250

VS

AMD Radeon HD 6790

ATI Radeon HD 4250

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6790 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 6790 's Advantages

Released 2 years and 2 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 6.336GB/s)

760 additional rendering cores

ATI Radeon HD 4250 's Advantages

Lower TDP (25W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 6790 +2700%

1.344 TFLOPS

Radeon HD 4250

0.048 TFLOPS

Radeon HD 6790

VS

Radeon HD 4250

Graphics Card

Apr 2011

Release Date

Feb 2009

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

396 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

134.4GB/s

Bandwidth

6.336GB/s

Render Config

10

Compute Units

2

-

800

Shading Units

40

TMUs

4

16

ROPs

4

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

64 KB

-

Theoretical Performance

13.44 GPixel/s

Pixel Rate

2.376 GPixel/s

33.60 GTexel/s

Texture Rate

2.376 GTexel/s

-

1344 GFLOPS

FP32 (float)

47.52 GFLOPS

-

Board Design

150W

TDP

25W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

Barts

GPU Name

RV620

Barts LE (215-0798002)

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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