AMD Radeon R9 295X2 vs ATI Radeon HD 3870 X2

VS

AMD Radeon R9 295X2

ATI Radeon HD 3870 X2

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 295X2 and 512MB VRAM Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 295X2 's Advantages

Released 6 years and 3 months late

More VRAM (4GB vs 512GB)

Larger VRAM bandwidth (320.0GB/s vs 57.66GB/s)

2496 additional rendering cores

ATI Radeon HD 3870 X2 's Advantages

Lower TDP (165W vs 500W)

Score

Benchmark

FP32 (float)

Radeon R9 295X2 +985%

5.733 TFLOPS

Radeon HD 3870 X2

0.528 TFLOPS

Radeon R9 295X2

VS

Radeon HD 3870 X2

Graphics Card

Apr 2014

Release Date

Jan 2008

Volcanic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

901 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

512bit

Memory Bus

256bit

320.0GB/s

Bandwidth

57.66GB/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

65.15 GPixel/s

Pixel Rate

13.20 GPixel/s

179.2 GTexel/s

Texture Rate

13.20 GTexel/s

-

5.733 TFLOPS

FP32 (float)

528.0 GFLOPS

716.7 GFLOPS

FP64 (double)

105.6 GFLOPS

Board Design

500W

TDP

165W

900 W

Suggested PSU

450 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Vesuvius

GPU Name

R680

Vesuvius XT (215-0852022)

GPU Variant

R680 XT (215-0708017)

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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