AMD Radeon R7 250X vs ATI Radeon HD 2900 GT

VS

AMD Radeon R7 250X

ATI Radeon HD 2900 GT

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R7 250X and 256MB VRAM Radeon HD 2900 GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 250X 's Advantages

Released 6 years and 3 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (72.00GB/s vs 51.20GB/s)

400 additional rendering cores

Lower TDP (80W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R7 250X +322%

1.216 TFLOPS

Radeon HD 2900 GT

0.288 TFLOPS

Radeon R7 250X

VS

Radeon HD 2900 GT

Graphics Card

Feb 2014

Release Date

Nov 2007

Volcanic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1125 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

51.20GB/s

Render Config

10

Compute Units

3

-

640

Shading Units

240

40

TMUs

12

16

ROPs

12

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

128 KB

-

Theoretical Performance

15.20 GPixel/s

Pixel Rate

7.212 GPixel/s

38.00 GTexel/s

Texture Rate

7.212 GTexel/s

-

1216 GFLOPS

FP32 (float)

288.5 GFLOPS

76.00 GFLOPS

FP64 (double)

-

Board Design

80W

TDP

150W

250 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

Cape Verde

GPU Name

R600

Cape Verde XT

GPU Variant

R600 GT (215RGFDKA13FG)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

1.5 billion

Transistors

0.72 billion

123 mm²

Die Size

420 mm²

Graphics Features

12 (11_1)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.0

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