AMD Radeon R9 270 vs AMD Radeon HD 8990 OEM

VS

AMD Radeon R9 270

AMD Radeon HD 8990 OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 and 3GB VRAM Radeon HD 8990 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270 's Advantages

Released 7 months late

Lower TDP (150W vs 375W)

AMD Radeon HD 8990 OEM 's Advantages

Boost Clock has increased by 8% (1000MHz vs 925MHz)

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 179.2GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270

2.368 TFLOPS

Radeon HD 8990 OEM +72%

4.096 TFLOPS

Radeon R9 270

VS

Radeon HD 8990 OEM

Graphics Card

Nov 2013

Release Date

Apr 2013

Volcanic Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

950 MHz

925 MHz

Boost Clock

1000 MHz

1400 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

179.2GB/s

Bandwidth

288.0GB/s

Render Config

20

Compute Units

32

-

1280

Shading Units

2048

80

TMUs

128

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

32.00 GPixel/s

74.00 GTexel/s

Texture Rate

128.0 GTexel/s

-

2.368 TFLOPS

FP32 (float)

4.096 TFLOPS

148.0 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

150W

TDP

375W

450 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

Curacao

GPU Name

Malta

Curacao PRO (215-0848000)

GPU Variant

Malta XT (215-0849026)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

4.313 billion

212 mm²

Die Size

365 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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