ATI Radeon HD 2900 PRO vs ATI Radeon HD 4650

VS

ATI Radeon HD 2900 PRO

ATI Radeon HD 4650

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 PRO and 256MB VRAM Radeon HD 4650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 PRO 's Advantages

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (51.20GB/s vs 22.40GB/s)

ATI Radeon HD 4650 's Advantages

Released 9 months late

Lower TDP (48W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 2900 PRO

0.384 TFLOPS

Radeon HD 4650

0.384 TFLOPS

Radeon HD 2900 PRO

VS

Radeon HD 4650

Graphics Card

Dec 2007

Release Date

Sep 2008

Radeon R600

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

700 MHz

Memory

512MB

Memory Size

256MB

GDDR3

Memory Type

GDDR3

256bit

Memory Bus

128bit

51.20GB/s

Bandwidth

22.40GB/s

Render Config

4

Compute Units

4

-

320

Shading Units

320

16

TMUs

32

16

ROPs

8

-

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

128 KB

-

Theoretical Performance

9.600 GPixel/s

Pixel Rate

4.800 GPixel/s

9.600 GTexel/s

Texture Rate

19.20 GTexel/s

-

384.0 GFLOPS

FP32 (float)

384.0 GFLOPS

-

Board Design

200W

TDP

48W

550 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

-

Graphics Processor

R600

GPU Name

RV730

R600 PRO (215RGMDKA13FG)

GPU Variant

RV730 PRO (215-0719056)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

80 nm

Process Size

55 nm

0.72 billion

Transistors

0.514 billion

420 mm²

Die Size

146 mm²

Graphics Features

10.0 (10_0)

DirectX

10.1 (10_1)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

4.0

Shader Model

4.1

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