NVIDIA GeForce 8800 GT Mac Edition vs AMD Radeon HD 6990

VS

NVIDIA GeForce 8800 GT Mac Edition

AMD Radeon HD 6990

We compared two Desktop platform GPUs: 512MB VRAM GeForce 8800 GT Mac Edition and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8800 GT Mac Edition 's Advantages

Lower TDP (125W vs 375W)

AMD Radeon HD 6990 's Advantages

Released 3 years and 1 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (160.0GB/s vs 57.60GB/s)

1424 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8800 GT Mac Edition

0.336 TFLOPS

Radeon HD 6990 +658%

2.55 TFLOPS

GeForce 8800 GT Mac Edition

VS

Radeon HD 6990

Graphics Card

Feb 2008

Release Date

Mar 2011

GeForce 8

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

256bit

57.60GB/s

Bandwidth

160.0GB/s

Render Config

-

Compute Units

24

14

SM Count

-

112

Shading Units

1536

56

TMUs

96

16

ROPs

32

-

L1 Cache

8 KB (per CU)

64 KB

L2 Cache

512 KB

-

Theoretical Performance

9.600 GPixel/s

Pixel Rate

26.56 GPixel/s

33.60 GTexel/s

Texture Rate

79.68 GTexel/s

-

336.0 GFLOPS

FP32 (float)

2.550 TFLOPS

-

FP64 (double)

637.4 GFLOPS

Board Design

125W

TDP

375W

300 W

Suggested PSU

750 W

2x DVI

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

G92

GPU Name

Antilles

G92-270-A2

GPU Variant

Antilles XT (215-0807027)

Tesla

Architecture

TeraScale 3

TSMC

Foundry

TSMC

65 nm

Process Size

40 nm

0.754 billion

Transistors

2.64 billion

324 mm²

Die Size

389 mm²

Graphics Features

11.1 (10_0)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

1.1

CUDA

-

4.0

Shader Model

5.0

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