ATI Radeon HD 4870 X2 vs NVIDIA GeForce 8800 GTS 320

VS

ATI Radeon HD 4870 X2

NVIDIA GeForce 8800 GTS 320

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4870 X2 and 320MB VRAM GeForce 8800 GTS 320 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 X2 's Advantages

Released 1 years and 6 months late

More VRAM (1024GB vs 320GB)

Larger VRAM bandwidth (115.2GB/s vs 63.36GB/s)

704 additional rendering cores

NVIDIA GeForce 8800 GTS 320 's Advantages

Lower TDP (143W vs 286W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 X2 +426%

1.2 TFLOPS

GeForce 8800 GTS 320

0.228 TFLOPS

Radeon HD 4870 X2

VS

GeForce 8800 GTS 320

Graphics Card

Aug 2008

Release Date

Feb 2007

Radeon R700

Generation

GeForce 8

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

900 MHz

Memory Clock

792 MHz

Memory

1024MB

Memory Size

320MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

320bit

115.2GB/s

Bandwidth

63.36GB/s

Render Config

10

Compute Units

-

SM Count

12

800

Shading Units

96

40

TMUs

24

16

ROPs

20

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

80 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

10.26 GPixel/s

30.00 GTexel/s

Texture Rate

24.62 GTexel/s

-

1200 GFLOPS

FP32 (float)

228.1 GFLOPS

240.0 GFLOPS

FP64 (double)

-

Board Design

286W

TDP

143W

600 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

R700

GPU Name

G80

R700 XT (215-0669045)

GPU Variant

G80-100-K0-A2

TeraScale

Architecture

Tesla

TSMC

Foundry

TSMC

55 nm

Process Size

90 nm

0.956 billion

Transistors

0.681 billion

256 mm²

Die Size

484 mm²

Graphics Features

10.1 (10_1)

DirectX

11.1 (10_0)

3.3

OpenGL

3.3

1.1

OpenCL

1.1 (1.0)

N/A

Vulkan

N/A

-

CUDA

1.0

4.1

Shader Model

4.0

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