AMD Radeon HD 7870 XT vs ATI Radeon X800 GT AGP

VS

AMD Radeon HD 7870 XT

ATI Radeon X800 GT AGP

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT 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 7870 XT 's Advantages

Released 5 years late

Boost Clock975MHz

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (192.0GB/s vs 31.55GB/s)

1536 additional rendering cores

ATI Radeon X800 GT AGP 's Advantages

Lower TDP (40W vs 185W)

Score

Radeon HD 7870 XT

VS

Radeon X800 GT AGP

Graphics Card

Nov 2012

Release Date

Nov 2007

Southern Islands

Generation

Radeon R400 AGP

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

AGP 8x

Clock Speeds

925 MHz

Base Clock

-

975 MHz

Boost Clock

-

1500 MHz

Memory Clock

493 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

192.0GB/s

Bandwidth

31.55GB/s

Render Config

24

Compute Units

-

1536

Shading Units

-

96

TMUs

8

32

ROPs

8

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

-

Theoretical Performance

31.20 GPixel/s

Pixel Rate

3.784 GPixel/s

93.60 GTexel/s

Texture Rate

3.784 GTexel/s

-

2.995 TFLOPS

FP32 (float)

-

748.8 GFLOPS

FP64 (double)

-

Board Design

185W

TDP

40W

450 W

Suggested PSU

200 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

1x Molex

Graphics Processor

Tahiti

GPU Name

R420

Tahiti LE (215-0821122)

GPU Variant

R420 GT (215RAACGA12F)

GCN 1.0

Architecture

R400

TSMC

Foundry

TSMC

28 nm

Process Size

130 nm

4.313 billion

Transistors

0.16 billion

352 mm²

Die Size

281 mm²

Graphics Features

12 (11_1)

DirectX

9.0b (9_2)

4.6

OpenGL

2.1

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

-

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