NVIDIA GeForce GTX 555 OEM vs ATI Radeon HD 2900 XT

VS

NVIDIA GeForce GTX 555 OEM

ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 555 OEM 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 555 OEM 's Advantages

Released 4 years late

More VRAM (1024GB vs 512GB)

Lower TDP (150W vs 215W)

ATI Radeon HD 2900 XT 's Advantages

Larger VRAM bandwidth (106.0GB/s vs 91.87GB/s)

32 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 555 OEM +78%

0.848 TFLOPS

Radeon HD 2900 XT

0.476 TFLOPS

GeForce GTX 555 OEM

VS

Radeon HD 2900 XT

Graphics Card

May 2011

Release Date

May 2007

GeForce 500

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

957 MHz

Memory Clock

828 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

192bit

Memory Bus

512bit

91.87GB/s

Bandwidth

106.0GB/s

Render Config

-

Compute Units

4

6

SM Count

-

288

Shading Units

320

48

TMUs

16

24

ROPs

16

-

64 KB (per SM)

L1 Cache

-

384 KB

L2 Cache

256 KB

-

Theoretical Performance

8.832 GPixel/s

Pixel Rate

11.89 GPixel/s

35.33 GTexel/s

Texture Rate

11.89 GTexel/s

-

847.9 GFLOPS

FP32 (float)

475.5 GFLOPS

70.66 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

215W

450 W

Suggested PSU

550 W

2x DVI 1x mini-HDMI 1.3a

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GF114

GPU Name

R600

GF114-200-KB-A1

GPU Variant

R600 XT (215RGMDKA13FG)

Fermi 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

1.95 billion

Transistors

0.72 billion

332 mm²

Die Size

420 mm²

Graphics Features

12 (11_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

2.1

CUDA

-

5.1

Shader Model

4.0

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