AMD Radeon HD 8950 OEM vs ATI Radeon HD 4870 X2

VS

AMD Radeon HD 8950 OEM ATI Radeon HD 4870 X2

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8950 OEM and 1024MB VRAM Radeon HD 4870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8950 OEM 's Advantages

Released 4 years and 5 months late

Boost Clock925MHz

More VRAM (3GB vs 1GB)

Larger VRAM bandwidth (240.0GB/s vs 115.2GB/s)

992 additional rendering cores

Lower TDP (200W vs 286W)

Score

Benchmark

FP32 (float)

Radeon HD 8950 OEM +176%

3.315 TFLOPS

Radeon HD 4870 X2

1.2 TFLOPS

Radeon HD 8950 OEM

VS

Radeon HD 4870 X2

Graphics Card

Jan 2013

Release Date

Aug 2008

Sea Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

850 MHz

Base Clock

-

925 MHz

Boost Clock

-

1250 MHz

Memory Clock

900 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

240.0GB/s

Bandwidth

115.2GB/s

Render Config

-

SM Count

-

28

Compute Units

10

1792

Shading Units

800

112

TMUs

40

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

256 KB

Theoretical Performance

29.60 GPixel/s

Pixel Rate

12.00 GPixel/s

103.6 GTexel/s

Texture Rate

30.00 GTexel/s

-

FP16 (half)

-

3.315 TFLOPS

FP32 (float)

1200 GFLOPS

828.8 GFLOPS

FP64 (double)

240.0 GFLOPS

Graphics Processor

Tahiti

GPU Name

R700

Tahiti PRO (215-0821056)

GPU Variant

R700 XT (215-0669045)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.956 billion

352 mm²

Die Size

256 mm²

Board Design

200W

TDP

286W

550 W

Suggested PSU

600 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 + 1x 8-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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