ATI Radeon HD 4770 vs ATI Radeon HD 2950 PRO

VS

ATI Radeon HD 4770

ATI Radeon HD 2950 PRO

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 256MB VRAM Radeon HD 2950 PRO to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4770 's Advantages

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (51.20GB/s vs 38.40GB/s)

320 additional rendering cores

ATI Radeon HD 2950 PRO 's Advantages

Lower TDP (75W vs 80W)

Score

Benchmark

FP32 (float)

Radeon HD 4770 +150%

0.96 TFLOPS

Radeon HD 2950 PRO

0.384 TFLOPS

Radeon HD 4770

VS

Radeon HD 2950 PRO

Graphics Card

Apr 2009

Release Date

Unknown

Radeon R700

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

600 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

51.20GB/s

Bandwidth

38.40GB/s

Render Config

8

Compute Units

4

-

640

Shading Units

320

32

TMUs

16

ROPs

16

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

256 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

9.600 GPixel/s

24.00 GTexel/s

Texture Rate

9.600 GTexel/s

-

960.0 GFLOPS

FP32 (float)

384.0 GFLOPS

192.0 GFLOPS

FP64 (double)

76.80 GFLOPS

Board Design

80W

TDP

75W

250 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV740

GPU Name

RV670

RV740 XT (215-0727019)

GPU Variant

RV670 PRO ES (215-0708001)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.826 billion

Transistors

0.666 billion

137 mm²

Die Size

192 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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