ATI Radeon HD 2900 XTX vs AMD Radeon R7 260X

VS

ATI Radeon HD 2900 XTX

AMD Radeon R7 260X

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XTX and 2GB VRAM Radeon R7 260X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 XTX 's Advantages

Larger VRAM bandwidth (106.0GB/s vs 104.0GB/s)

AMD Radeon R7 260X 's Advantages

More VRAM (2GB vs 512GB)

576 additional rendering cores

Lower TDP (115W vs 240W)

Score

Benchmark

FP32 (float)

Radeon HD 2900 XTX

0.476 TFLOPS

Radeon R7 260X +314%

1.971 TFLOPS

Radeon HD 2900 XTX

VS

Radeon R7 260X

Graphics Card

Unknown

Release Date

Oct 2013

Radeon R600

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

828 MHz

Memory Clock

1625 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

512bit

Memory Bus

128bit

106.0GB/s

Bandwidth

104.0GB/s

Render Config

4

Compute Units

14

-

320

Shading Units

896

16

TMUs

56

16

ROPs

16

-

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

11.89 GPixel/s

Pixel Rate

17.60 GPixel/s

11.89 GTexel/s

Texture Rate

61.60 GTexel/s

-

475.5 GFLOPS

FP32 (float)

1.971 TFLOPS

-

FP64 (double)

123.2 GFLOPS

Board Design

240W

TDP

115W

550 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

R600

GPU Name

Bonaire

R600 XTX A11 (215RGMDKA11FG)

GPU Variant

Bonaire XTX (215-0839097)

TeraScale

Architecture

GCN 2.0

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.72 billion

Transistors

2.08 billion

420 mm²

Die Size

160 mm²

Graphics Features

10.0 (10_0)

DirectX

12 (12_0)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

2.0

N/A

Vulkan

1.2

-

4.0

Shader Model

6.3

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