ATI Radeon HD 4870 Mac Edition vs ATI Radeon X1950 GT

VS

ATI Radeon HD 4870 Mac Edition

ATI Radeon X1950 GT

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 256MB VRAM Radeon X1950 GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 Mac Edition 's Advantages

Released 2 years late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (108.8GB/s vs 38.40GB/s)

800 additional rendering cores

ATI Radeon X1950 GT 's Advantages

Lower TDP (57W vs 150W)

Score

Radeon HD 4870 Mac Edition

VS

Radeon X1950 GT

Graphics Card

Jan 2009

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

-

850 MHz

Memory Clock

600 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

108.8GB/s

Bandwidth

38.40GB/s

Render Config

10

Compute Units

-

800

Shading Units

-

40

TMUs

12

16

ROPs

12

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

6.000 GPixel/s

30.00 GTexel/s

Texture Rate

6.000 GTexel/s

-

1200 GFLOPS

FP32 (float)

-

240.0 GFLOPS

FP64 (double)

-

Board Design

150W

TDP

57W

450 W

Suggested PSU

250 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV770

GPU Name

RV570

RV770 XT Mac (215-0669080)

GPU Variant

RV570 XL

TeraScale

Architecture

R500

TSMC

Foundry

TSMC

55 nm

Process Size

80 nm

0.956 billion

Transistors

0.33 billion

256 mm²

Die Size

230 mm²

Graphics Features

10.1 (10_1)

DirectX

9.0c (9_3)

3.3

OpenGL

2.1 (full) 3.0 (partial)

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

3.0

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