ATI Radeon HD 4890 vs NVIDIA GeForce 8800 Ultra

VS

ATI Radeon HD 4890

NVIDIA GeForce 8800 Ultra

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 and 768MB VRAM GeForce 8800 Ultra to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4890 's Advantages

Released 1 years and 11 months late

More VRAM (1024GB vs 768GB)

Larger VRAM bandwidth (124.8GB/s vs 103.7GB/s)

672 additional rendering cores

NVIDIA GeForce 8800 Ultra 's Advantages

Lower TDP (171W vs 190W)

Score

Benchmark

FP32 (float)

Radeon HD 4890 +251%

1.36 TFLOPS

GeForce 8800 Ultra

0.387 TFLOPS

Radeon HD 4890

VS

GeForce 8800 Ultra

Graphics Card

Apr 2009

Release Date

May 2007

Radeon R700

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

975 MHz

Memory Clock

1080 MHz

Memory

1024MB

Memory Size

768MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

384bit

124.8GB/s

Bandwidth

103.7GB/s

Render Config

10

Compute Units

-

SM Count

16

800

Shading Units

128

40

TMUs

32

16

ROPs

24

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

96 KB

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

14.69 GPixel/s

34.00 GTexel/s

Texture Rate

39.17 GTexel/s

-

1360 GFLOPS

FP32 (float)

387.1 GFLOPS

272.0 GFLOPS

FP64 (double)

-

Board Design

190W

TDP

171W

450 W

Suggested PSU

450 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

RV790

GPU Name

G80

RV790 XT (215-0758016)

GPU Variant

G80-450-A3

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

90 nm

0.959 billion

Transistors

0.681 billion

282 mm²

Die Size

484 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3

OpenGL

3.3

1.1

OpenCL

1.1 (1.0)

N/A

Vulkan

N/A

-

CUDA

1.0

4.1

Shader Model

4.0

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