AMD Radeon R5 340 OEM vs ATI Radeon HD 4855

VS

AMD Radeon R5 340 OEM

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R5 340 OEM and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 340 OEM 's Advantages

Released 5 years and 4 months late

Boost Clock780MHz

More VRAM (1024GB vs 512GB)

Lower TDP (65W vs 110W)

ATI Radeon HD 4855 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 36.80GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 340 OEM

0.599 TFLOPS

Radeon HD 4855 +22%

0.736 TFLOPS

Radeon R5 340 OEM

VS

Radeon HD 4855

Graphics Card

May 2015

Release Date

Jan 2010

Pirate Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

730 MHz

Base Clock

-

780 MHz

Boost Clock

-

1150 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

256bit

36.80GB/s

Bandwidth

115.2GB/s

Render Config

6

Compute Units

8

-

384

Shading Units

640

24

TMUs

32

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

6.240 GPixel/s

Pixel Rate

9.200 GPixel/s

18.72 GTexel/s

Texture Rate

18.40 GTexel/s

-

599.0 GFLOPS

FP32 (float)

736.0 GFLOPS

37.44 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

65W

TDP

110W

250 W

Suggested PSU

300 W

1x DVI 1x DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

1x 6-pin

Graphics Processor

Oland

GPU Name

RV770

Oland PRO (215-0837015)

GPU Variant

RV770 PRO (215-0669065)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

0.95 billion

Transistors

0.956 billion

77 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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