ATI Radeon HD 4890 vs NVIDIA GeForce GTX 275 PhysX Edition

VS

ATI Radeon HD 4890

NVIDIA GeForce GTX 275 PhysX Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 and 896MB VRAM GeForce GTX 275 PhysX Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4890 's Advantages

More VRAM (1024GB vs 896GB)

560 additional rendering cores

Lower TDP (190W vs 219W)

NVIDIA GeForce GTX 275 PhysX Edition 's Advantages

Released 10 months late

Larger VRAM bandwidth (127.0GB/s vs 124.8GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 4890 +118%

1.36 TFLOPS

GeForce GTX 275 PhysX Edition

0.622 TFLOPS

Radeon HD 4890

VS

GeForce GTX 275 PhysX Edition

Graphics Card

Apr 2009

Release Date

Feb 2010

Radeon R700

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

975 MHz

Memory Clock

1134 MHz

Memory

1024MB

Memory Size

896MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

448bit

124.8GB/s

Bandwidth

127.0GB/s

Render Config

10

Compute Units

-

SM Count

30

800

Shading Units

240

40

TMUs

80

16

ROPs

28

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

224 KB

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

17.72 GPixel/s

34.00 GTexel/s

Texture Rate

50.64 GTexel/s

-

1360 GFLOPS

FP32 (float)

622.1 GFLOPS

272.0 GFLOPS

FP64 (double)

77.76 GFLOPS

Board Design

190W

TDP

219W

450 W

Suggested PSU

550 W

2x DVI 1x S-Video

Outputs

2x DVI

2x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

RV790

GPU Name

G92B

RV790 XT (215-0758016)

GPU Variant

G92-421-B1

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.959 billion

Transistors

0.754 billion

282 mm²

Die Size

260 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.3

4.1

Shader Model

4.0

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