AMD Radeon R9 270 vs ATI Radeon HD 3850

VS

AMD Radeon R9 270

ATI Radeon HD 3850

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 and 512MB VRAM Radeon HD 3850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270 's Advantages

Released 6 years late

Boost Clock925MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (179.2GB/s vs 53.12GB/s)

960 additional rendering cores

ATI Radeon HD 3850 's Advantages

Lower TDP (75W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R9 270 +453%

2.368 TFLOPS

Radeon HD 3850

0.428 TFLOPS

Radeon R9 270

VS

Radeon HD 3850

Graphics Card

Nov 2013

Release Date

Nov 2007

Volcanic Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1400 MHz

Memory Clock

830 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

256bit

179.2GB/s

Bandwidth

53.12GB/s

Render Config

20

Compute Units

4

-

1280

Shading Units

320

80

TMUs

16

32

ROPs

16

-

16 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

256 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

10.69 GPixel/s

74.00 GTexel/s

Texture Rate

10.69 GTexel/s

-

2.368 TFLOPS

FP32 (float)

427.5 GFLOPS

148.0 GFLOPS

FP64 (double)

85.50 GFLOPS

Board Design

150W

TDP

75W

450 W

Suggested PSU

250 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Curacao

GPU Name

RV670

Curacao PRO (215-0848000)

GPU Variant

RV670 PRO (215-0708003)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.8 billion

Transistors

0.666 billion

212 mm²

Die Size

192 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3 (full) 4.0 (partial)

1.2

OpenCL

N/A

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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