AMD Radeon HD 8870 OEM vs ATI Radeon HD 4830

VS

AMD Radeon HD 8870 OEM

ATI Radeon HD 4830

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 8870 OEM and 512MB VRAM Radeon HD 4830 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 4 years and 3 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (153.6GB/s vs 57.60GB/s)

640 additional rendering cores

ATI Radeon HD 4830 's Advantages

Lower TDP (95W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 8870 OEM +247%

2.56 TFLOPS

Radeon HD 4830

0.736 TFLOPS

Radeon HD 8870 OEM

VS

Radeon HD 4830

Graphics Card

Jan 2013

Release Date

Oct 2008

Sea Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

153.6GB/s

Bandwidth

57.60GB/s

Render Config

20

Compute Units

8

-

1280

Shading Units

640

80

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

9.200 GPixel/s

80.00 GTexel/s

Texture Rate

18.40 GTexel/s

-

2.560 TFLOPS

FP32 (float)

736.0 GFLOPS

160.0 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

175W

TDP

95W

450 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Pitcairn

GPU Name

RV770

Pitcairn XT (215-0828047)

GPU Variant

RV770 LE (215-0669075)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.956 billion

212 mm²

Die Size

256 mm²

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

-

5.1

Shader Model

4.1

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