ATI Radeon HD 4770 vs ATI Radeon HD 2900 XT

VS

ATI Radeon HD 4770 ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 512MB VRAM Radeon HD 2900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4770 's Advantages

Released 1 years and 11 months late

320 additional rendering cores

Lower TDP (80W vs 215W)

ATI Radeon HD 2900 XT 's Advantages

Larger VRAM bandwidth (106.0GB/s vs 51.20GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 4770 +101%

0.96 TFLOPS

Radeon HD 2900 XT

0.476 TFLOPS

Radeon HD 4770

VS

Radeon HD 2900 XT

Graphics Card

Apr 2009

Release Date

May 2007

Radeon R700

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

800 MHz

Memory Clock

828 MHz

Memory

512MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

512bit

51.20GB/s

Bandwidth

106.0GB/s

Render Config

-

SM Count

-

8

Compute Units

4

640

Shading Units

320

32

TMUs

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

256 KB

Theoretical Performance

12.00 GPixel/s

Pixel Rate

11.89 GPixel/s

24.00 GTexel/s

Texture Rate

11.89 GTexel/s

-

FP16 (half)

-

960.0 GFLOPS

FP32 (float)

475.5 GFLOPS

192.0 GFLOPS

FP64 (double)

-

Graphics Processor

RV740

GPU Name

R600

RV740 XT (215-0727019)

GPU Variant

R600 XT (215RGMDKA13FG)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

0.826 billion

Transistors

0.72 billion

137 mm²

Die Size

420 mm²

Board Design

80W

TDP

215W

250 W

Suggested PSU

550 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

10.1 (10_1)

DirectX

10.0 (10_0)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

4.0

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