ATI Radeon HD 4890 vs NVIDIA GeForce 6800

VS

ATI Radeon HD 4890

NVIDIA GeForce 6800

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 and 256MB VRAM GeForce 6800 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4890 's Advantages

Released 4 years and 5 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (124.8GB/s vs 19.20GB/s)

800 additional rendering cores

Score

Radeon HD 4890

VS

GeForce 6800

Graphics Card

Apr 2009

Release Date

Nov 2004

Radeon R700

Generation

GeForce 6 PCIe

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

975 MHz

Memory Clock

300 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

DDR

256bit

Memory Bus

256bit

124.8GB/s

Bandwidth

19.20GB/s

Render Config

10

Compute Units

-

800

Shading Units

-

40

TMUs

12

16

ROPs

8

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

2.600 GPixel/s

34.00 GTexel/s

Texture Rate

3.900 GTexel/s

-

1360 GFLOPS

FP32 (float)

-

272.0 GFLOPS

FP64 (double)

-

Board Design

190W

TDP

Unknown

450 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Processor

RV790

GPU Name

NV41

RV790 XT (215-0758016)

GPU Variant

-

TeraScale

Architecture

Curie

TSMC

Foundry

TSMC

55 nm

Process Size

130 nm

0.959 billion

Transistors

0.19 billion

282 mm²

Die Size

225 mm²

Graphics Features

10.1 (10_1)

DirectX

9.0c (9_3)

3.3

OpenGL

2.0 (full) 2.1 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

3.0

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