AMD Radeon HD 6990 vs NVIDIA GeForce GTX 260

VS

AMD Radeon HD 6990

NVIDIA GeForce GTX 260

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 896MB VRAM GeForce GTX 260 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990 's Advantages

Released 2 years and 9 months late

More VRAM (2GB vs 896GB)

Larger VRAM bandwidth (160.0GB/s vs 111.9GB/s)

1344 additional rendering cores

NVIDIA GeForce GTX 260 's Advantages

Lower TDP (182W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990 +434%

2.55 TFLOPS

GeForce GTX 260

0.477 TFLOPS

Radeon HD 6990

VS

GeForce GTX 260

Graphics Card

Mar 2011

Release Date

Jun 2008

Northern Islands

Generation

GeForce 200

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

999 MHz

Memory

2GB

Memory Size

896MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

448bit

160.0GB/s

Bandwidth

111.9GB/s

Render Config

24

Compute Units

-

SM Count

24

1536

Shading Units

192

96

TMUs

64

32

ROPs

28

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

224 KB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

16.13 GPixel/s

79.68 GTexel/s

Texture Rate

36.86 GTexel/s

-

2.550 TFLOPS

FP32 (float)

476.9 GFLOPS

637.4 GFLOPS

FP64 (double)

59.62 GFLOPS

Board Design

375W

TDP

182W

750 W

Suggested PSU

450 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Antilles

GPU Name

GT200

Antilles XT (215-0807027)

GPU Variant

G200-100-A2

TeraScale 3

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

65 nm

2.64 billion

Transistors

1.4 billion

389 mm²

Die Size

576 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.3

5.0

Shader Model

4.0

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