ATI Radeon HD 2600 XT Mac Edition vs NVIDIA GeForce GTX 275

VS

ATI Radeon HD 2600 XT Mac Edition

NVIDIA GeForce GTX 275

We compared two Desktop platform GPUs: 256MB VRAM Radeon HD 2600 XT Mac Edition and 896MB VRAM GeForce GTX 275 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2600 XT Mac Edition 's Advantages

Lower TDP (45W vs 219W)

NVIDIA GeForce GTX 275 's Advantages

Released 11 months late

More VRAM (896GB vs 256GB)

Larger VRAM bandwidth (127.0GB/s vs 25.60GB/s)

120 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 2600 XT Mac Edition

0.168 TFLOPS

GeForce GTX 275 +301%

0.674 TFLOPS

Radeon HD 2600 XT Mac Edition

VS

GeForce GTX 275

Graphics Card

Feb 2008

Release Date

Jan 2009

Radeon R600

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1134 MHz

Memory

256MB

Memory Size

896MB

GDDR3

Memory Type

GDDR3

128bit

Memory Bus

448bit

25.60GB/s

Bandwidth

127.0GB/s

Render Config

3

Compute Units

-

SM Count

30

120

Shading Units

240

8

TMUs

80

4

ROPs

28

-

64 KB

L2 Cache

224 KB

-

Theoretical Performance

2.800 GPixel/s

Pixel Rate

17.72 GPixel/s

5.600 GTexel/s

Texture Rate

50.64 GTexel/s

-

168.0 GFLOPS

FP32 (float)

673.9 GFLOPS

-

FP64 (double)

84.24 GFLOPS

Board Design

45W

TDP

219W

200 W

Suggested PSU

550 W

2x DVI

Outputs

2x DVI

None

Power Connectors

2x 6-pin

Graphics Processor

RV630

GPU Name

GT200B

-

GPU Variant

G200-105-B3

TeraScale

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

65 nm

Process Size

55 nm

0.39 billion

Transistors

1.4 billion

153 mm²

Die Size

470 mm²

Graphics Features

10.0 (10_0)

DirectX

11.1 (10_0)

3.3

OpenGL

3.3

N/A

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.3

4.0

Shader Model

4.0

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