AMD Radeon HD 8490 OEM vs AMD Radeon R9 270

VS

AMD Radeon HD 8490 OEM

AMD Radeon R9 270

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8490 OEM and 2GB VRAM Radeon R9 270 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8490 OEM 's Advantages

Lower TDP (35W vs 150W)

AMD Radeon R9 270 's Advantages

Boost Clock925MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (179.2GB/s vs 14.40GB/s)

1120 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8490 OEM

0.28 TFLOPS

Radeon R9 270 +745%

2.368 TFLOPS

Radeon HD 8490 OEM

VS

Radeon R9 270

Graphics Card

Jul 2013

Release Date

Nov 2013

Sea Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

925 MHz

900 MHz

Memory Clock

1400 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

256bit

14.40GB/s

Bandwidth

179.2GB/s

Render Config

2

Compute Units

20

-

160

Shading Units

1280

8

TMUs

80

4

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

512 KB

-

Theoretical Performance

3.500 GPixel/s

Pixel Rate

29.60 GPixel/s

7.000 GTexel/s

Texture Rate

74.00 GTexel/s

-

280.0 GFLOPS

FP32 (float)

2.368 TFLOPS

-

FP64 (double)

148.0 GFLOPS

Board Design

35W

TDP

150W

200 W

Suggested PSU

450 W

1x DVI 1x DisplayPort 1.1

Outputs

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

None

Power Connectors

1x 6-pin

Graphics Processor

Caicos

GPU Name

Curacao

Caicos XTX

GPU Variant

Curacao PRO (215-0848000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

2.8 billion

67 mm²

Die Size

212 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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