AMD Radeon R9 390X vs ATI Radeon HD 2950 PRO

VS

AMD Radeon R9 390X

ATI Radeon HD 2950 PRO

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 256MB VRAM Radeon HD 2950 PRO to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390X 's Advantages

More VRAM (8GB vs 256GB)

Larger VRAM bandwidth (384.0GB/s vs 38.40GB/s)

2496 additional rendering cores

ATI Radeon HD 2950 PRO 's Advantages

Lower TDP (75W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X +1440%

5.914 TFLOPS

Radeon HD 2950 PRO

0.384 TFLOPS

Radeon R9 390X

VS

Radeon HD 2950 PRO

Graphics Card

Jun 2015

Release Date

Unknown

Pirate Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

600 MHz

Memory

8GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

512bit

Memory Bus

256bit

384.0GB/s

Bandwidth

38.40GB/s

Render Config

44

Compute Units

4

-

2816

Shading Units

320

176

TMUs

16

64

ROPs

16

-

16 KB (per CU)

L1 Cache

-

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

67.20 GPixel/s

Pixel Rate

9.600 GPixel/s

184.8 GTexel/s

Texture Rate

9.600 GTexel/s

-

5.914 TFLOPS

FP32 (float)

384.0 GFLOPS

739.2 GFLOPS

FP64 (double)

76.80 GFLOPS

Board Design

275W

TDP

75W

600 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Grenada

GPU Name

RV670

Grenada XT (215-0880004)

GPU Variant

RV670 PRO ES (215-0708001)

GCN 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

6.2 billion

Transistors

0.666 billion

438 mm²

Die Size

192 mm²

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

2.0

OpenCL

N/A

1.2

Vulkan

N/A

-

6.3

Shader Model

4.1

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