AMD Radeon R9 270X vs ATI Radeon HD 2900 XT

VS

AMD Radeon R9 270X

ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270X and 512MB VRAM Radeon HD 2900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270X 's Advantages

Released 6 years and 5 months late

Boost Clock1050MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (179.2GB/s vs 106.0GB/s)

960 additional rendering cores

Lower TDP (180W vs 215W)

Score

Benchmark

FP32 (float)

Radeon R9 270X +464%

2.688 TFLOPS

Radeon HD 2900 XT

0.476 TFLOPS

Radeon R9 270X

VS

Radeon HD 2900 XT

Graphics Card

Oct 2013

Release Date

May 2007

Volcanic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

1000 MHz

Base Clock

-

1050 MHz

Boost Clock

-

1400 MHz

Memory Clock

828 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

512bit

179.2GB/s

Bandwidth

106.0GB/s

Render Config

20

Compute Units

4

-

1280

Shading Units

320

80

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

33.60 GPixel/s

Pixel Rate

11.89 GPixel/s

84.00 GTexel/s

Texture Rate

11.89 GTexel/s

-

2.688 TFLOPS

FP32 (float)

475.5 GFLOPS

168.0 GFLOPS

FP64 (double)

-

Board Design

180W

TDP

215W

450 W

Suggested PSU

550 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Curacao

GPU Name

R600

Curacao XT (215-0848004)

GPU Variant

R600 XT (215RGMDKA13FG)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

2.8 billion

Transistors

0.72 billion

212 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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