AMD Radeon HD 8870 OEM vs ATI Radeon HD 4860

VS

AMD Radeon HD 8870 OEM ATI Radeon HD 4860

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 512MB VRAM Radeon HD 4860 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8870 OEM 's Advantages

Released 3 years and 4 months late

Larger VRAM bandwidth (153.6GB/s vs 96.00GB/s)

640 additional rendering cores

ATI Radeon HD 4860 's Advantages

Lower TDP (130W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +185%

2.56 TFLOPS

Radeon HD 4860

0.896 TFLOPS

Radeon HD 8870 OEM

VS

Radeon HD 4860

Graphics Card

Jan 2013

Release Date

Sep 2009

Sea Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1200 MHz

Memory Clock

750 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

-

20

Compute Units

8

1280

Shading Units

640

80

TMUs

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

11.20 GPixel/s

80.00 GTexel/s

Texture Rate

22.40 GTexel/s

-

FP16 (half)

-

2.560 TFLOPS

FP32 (float)

896.0 GFLOPS

160.0 GFLOPS

FP64 (double)

179.2 GFLOPS

Graphics Processor

Pitcairn

GPU Name

RV790

Pitcairn XT (215-0828047)

GPU Variant

RV790 GT

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.959 billion

212 mm²

Die Size

282 mm²

Board Design

175W

TDP

130W

450 W

Suggested PSU

300 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

2x 6-pin

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

-

5.1

Shader Model

4.1

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