AMD Radeon HD 6790 vs ATI Radeon X800 GT AGP

VS

AMD Radeon HD 6790

ATI Radeon X800 GT AGP

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6790 and 256MB VRAM Radeon X800 GT AGP 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 5 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (134.4GB/s vs 31.55GB/s)

800 additional rendering cores

ATI Radeon X800 GT AGP 's Advantages

Lower TDP (40W vs 150W)

Score

Radeon HD 6790

VS

Radeon X800 GT AGP

Graphics Card

Apr 2011

Release Date

Nov 2007

Northern Islands

Generation

Radeon R400 AGP

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

AGP 8x

Clock Speeds

-

1050 MHz

Memory Clock

493 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

31.55GB/s

Render Config

10

Compute Units

-

800

Shading Units

-

40

TMUs

8

16

ROPs

8

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

-

Theoretical Performance

13.44 GPixel/s

Pixel Rate

3.784 GPixel/s

33.60 GTexel/s

Texture Rate

3.784 GTexel/s

-

1344 GFLOPS

FP32 (float)

-

Board Design

150W

TDP

40W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

1x Molex

Graphics Processor

Barts

GPU Name

R420

Barts LE (215-0798002)

GPU Variant

R420 GT (215RAACGA12F)

TeraScale 2

Architecture

R400

TSMC

Foundry

TSMC

40 nm

Process Size

130 nm

1.7 billion

Transistors

0.16 billion

255 mm²

Die Size

281 mm²

Graphics Features

11.2 (11_0)

DirectX

9.0b (9_2)

4.4

OpenGL

2.1

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

-

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