ATI Radeon HD 2900 PRO vs AMD Radeon R9 280X

VS

ATI Radeon HD 2900 PRO

AMD Radeon R9 280X

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 PRO and 3GB VRAM Radeon R9 280X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 PRO 's Advantages

Lower TDP (200W vs 250W)

AMD Radeon R9 280X 's Advantages

Released 5 years and 10 months late

Boost Clock1000MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (288.0GB/s vs 51.20GB/s)

1728 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 2900 PRO

0.384 TFLOPS

Radeon R9 280X +966%

4.096 TFLOPS

Radeon HD 2900 PRO

VS

Radeon R9 280X

Graphics Card

Dec 2007

Release Date

Oct 2013

Radeon R600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

1000 MHz

800 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

3GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

384bit

51.20GB/s

Bandwidth

288.0GB/s

Render Config

4

Compute Units

32

-

320

Shading Units

2048

16

TMUs

128

16

ROPs

32

-

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

768 KB

-

Theoretical Performance

9.600 GPixel/s

Pixel Rate

32.00 GPixel/s

9.600 GTexel/s

Texture Rate

128.0 GTexel/s

-

384.0 GFLOPS

FP32 (float)

4.096 TFLOPS

-

FP64 (double)

1024 GFLOPS

Board Design

200W

TDP

250W

550 W

Suggested PSU

600 W

2x DVI 1x S-Video

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

R600

GPU Name

Tahiti

R600 PRO (215RGMDKA13FG)

GPU Variant

Tahiti XTL (215-0821065)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.72 billion

Transistors

4.313 billion

420 mm²

Die Size

352 mm²

Graphics Features

10.0 (10_0)

DirectX

12 (11_1)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

1.2

N/A

Vulkan

1.2

-

4.0

Shader Model

5.1

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