ATI Radeon HD 4870 Mac Edition vs AMD Radeon HD 8950 OEM

VS

ATI Radeon HD 4870 Mac Edition AMD Radeon HD 8950 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4870 Mac Edition and 3GB VRAM Radeon HD 8950 OEM 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

Lower TDP (150W vs 200W)

AMD Radeon HD 8950 OEM 's Advantages

Released 4 years late

Boost Clock925MHz

Larger VRAM bandwidth (240.0GB/s vs 108.8GB/s)

992 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon HD 8950 OEM +176%

3.315 TFLOPS

Radeon HD 4870 Mac Edition

VS

Radeon HD 8950 OEM

Graphics Card

Jan 2009

Release Date

Jan 2013

Radeon R700

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

925 MHz

850 MHz

Memory Clock

1250 MHz

Memory

512MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

108.8GB/s

Bandwidth

240.0GB/s

Render Config

-

SM Count

-

10

Compute Units

28

800

Shading Units

1792

40

TMUs

112

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

12.00 GPixel/s

Pixel Rate

29.60 GPixel/s

30.00 GTexel/s

Texture Rate

103.6 GTexel/s

-

FP16 (half)

-

1200 GFLOPS

FP32 (float)

3.315 TFLOPS

240.0 GFLOPS

FP64 (double)

828.8 GFLOPS

Graphics Processor

RV770

GPU Name

Tahiti

RV770 XT Mac (215-0669080)

GPU Variant

Tahiti PRO (215-0821056)

TeraScale

Architecture

GCN 1.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

4.313 billion

256 mm²

Die Size

352 mm²

Board Design

150W

TDP

200W

450 W

Suggested PSU

550 W

1x DVI 1x mini-DisplayPort 1.0

Outputs

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

2x 6-pin

Power Connectors

2x 6-pin

Graphics Features

10.1 (10_1)

DirectX

12 (11_1)

3.3

OpenGL

4.6

1.1

OpenCL

1.2

N/A

Vulkan

1.2

-

CUDA

-

4.1

Shader Model

5.1

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