ATI Radeon HD 4870 vs ATI Radeon X1550 PCI

VS

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 and 256MB VRAM Radeon X1550 PCI to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 's Advantages

Released 1 years and 5 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (115.2GB/s vs 4.256GB/s)

800 additional rendering cores

ATI Radeon X1550 PCI 's Advantages

Lower TDP (27W vs 150W)

Score

Radeon HD 4870

VS

Radeon X1550 PCI

Graphics Card

Jun 2008

Release Date

Jan 2007

Radeon R700

Generation

Radeon R500 PCIe

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

266 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

4.256GB/s

Render Config

-

SM Count

-

10

Compute Units

-

800

Shading Units

-

40

TMUs

4

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

1.808 GPixel/s

30.00 GTexel/s

Texture Rate

1.808 GTexel/s

-

FP16 (half)

-

1200 GFLOPS

FP32 (float)

-

240.0 GFLOPS

FP64 (double)

-

Graphics Processor

RV770

GPU Name

RV516

RV770 XT (215-0669049)

GPU Variant

-

TeraScale

Architecture

R500

TSMC

Foundry

UMC

55 nm

Process Size

80 nm

0.956 billion

Transistors

0.107 billion

256 mm²

Die Size

100 mm²

Board Design

150W

TDP

27W

450 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

1x DVI 1x VGA 1x S-Video

2x 6-pin

Power Connectors

None

Graphics Features

10.1 (10_1)

DirectX

9.0c (9_3)

3.3

OpenGL

2.1

1.1

OpenCL

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

3.0

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