AMD Radeon HD 6790 vs NVIDIA GeForce 8800 GT Mac Edition

VS

AMD Radeon HD 6790

NVIDIA GeForce 8800 GT Mac Edition

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6790 and 512MB VRAM GeForce 8800 GT Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6790 's Advantages

Released 3 years and 2 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 57.60GB/s)

688 additional rendering cores

NVIDIA GeForce 8800 GT Mac Edition 's Advantages

Lower TDP (125W vs 150W)

Score

Benchmark

FP32 (float)

Radeon HD 6790 +300%

1.344 TFLOPS

GeForce 8800 GT Mac Edition

0.336 TFLOPS

Radeon HD 6790

VS

GeForce 8800 GT Mac Edition

Graphics Card

Apr 2011

Release Date

Feb 2008

Northern Islands

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

57.60GB/s

Render Config

10

Compute Units

-

SM Count

14

800

Shading Units

112

40

TMUs

56

16

ROPs

16

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

64 KB

-

Theoretical Performance

13.44 GPixel/s

Pixel Rate

9.600 GPixel/s

33.60 GTexel/s

Texture Rate

33.60 GTexel/s

-

1344 GFLOPS

FP32 (float)

336.0 GFLOPS

-

Board Design

150W

TDP

125W

450 W

Suggested PSU

300 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

2x DVI

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Barts

GPU Name

G92

Barts LE (215-0798002)

GPU Variant

G92-270-A2

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

65 nm

1.7 billion

Transistors

0.754 billion

255 mm²

Die Size

324 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

1.1

5.0

Shader Model

4.0

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