NVIDIA GeForce GTX 275 vs ATI Radeon HD 2900 XT

VS

NVIDIA GeForce GTX 275 ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 275 and 512MB VRAM Radeon HD 2900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 275 's Advantages

Released 1 years and 8 months late

More VRAM (896GB vs 512GB)

Larger VRAM bandwidth (127.0GB/s vs 106.0GB/s)

ATI Radeon HD 2900 XT 's Advantages

80 additional rendering cores

Lower TDP (215W vs 219W)

Score

Benchmark

FP32 (float)

GeForce GTX 275 +41%

0.674 TFLOPS

Radeon HD 2900 XT

0.476 TFLOPS

GeForce GTX 275

VS

Radeon HD 2900 XT

Graphics Card

Jan 2009

Release Date

May 2007

GeForce 200

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1134 MHz

Memory Clock

828 MHz

Memory

896MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

448bit

Memory Bus

512bit

127.0GB/s

Bandwidth

106.0GB/s

Render Config

30

SM Count

-

Compute Units

4

240

Shading Units

320

80

TMUs

16

28

ROPs

16

-

Tensor Cores

-

RT Cores

-

L1 Cache

-

224 KB

L2 Cache

256 KB

Theoretical Performance

17.72 GPixel/s

Pixel Rate

11.89 GPixel/s

50.64 GTexel/s

Texture Rate

11.89 GTexel/s

-

FP16 (half)

-

673.9 GFLOPS

FP32 (float)

475.5 GFLOPS

84.24 GFLOPS

FP64 (double)

-

Graphics Processor

GT200B

GPU Name

R600

G200-105-B3

GPU Variant

R600 XT (215RGMDKA13FG)

Tesla 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

80 nm

1.4 billion

Transistors

0.72 billion

470 mm²

Die Size

420 mm²

Board Design

219W

TDP

215W

550 W

Suggested PSU

550 W

2x DVI

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

11.1 (10_0)

DirectX

10.0 (10_0)

3.3

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

1.3

CUDA

-

4.0

Shader Model

4.0

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