ATI Radeon HD 4890 vs ATI Radeon HD 4870

VS

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4890 and 512MB VRAM Radeon HD 4870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4890 's Advantages

Released 10 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (124.8GB/s vs 115.2GB/s)

ATI Radeon HD 4870 's Advantages

Lower TDP (150W vs 190W)

Score

Benchmark

FP32 (float)

Radeon HD 4890 +13%

1.36 TFLOPS

Radeon HD 4870

1.2 TFLOPS

Radeon HD 4890

VS

Radeon HD 4870

Graphics Card

Apr 2009

Release Date

Jun 2008

Radeon R700

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

975 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

124.8GB/s

Bandwidth

115.2GB/s

Render Config

-

SM Count

-

10

Compute Units

10

800

Shading Units

800

40

TMUs

40

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

13.60 GPixel/s

Pixel Rate

12.00 GPixel/s

34.00 GTexel/s

Texture Rate

30.00 GTexel/s

-

FP16 (half)

-

1360 GFLOPS

FP32 (float)

1200 GFLOPS

272.0 GFLOPS

FP64 (double)

240.0 GFLOPS

Graphics Processor

RV790

GPU Name

RV770

RV790 XT (215-0758016)

GPU Variant

RV770 XT (215-0669049)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.959 billion

Transistors

0.956 billion

282 mm²

Die Size

256 mm²

Board Design

190W

TDP

150W

450 W

Suggested PSU

450 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

2x 6-pin

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

-

4.1

Shader Model

4.1

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