AMD Radeon HD 8990 OEM vs AMD Radeon R7 265X OEM

VS

AMD Radeon HD 8990 OEM

AMD Radeon R7 265X OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8990 OEM and 2GB VRAM Radeon R7 265X OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

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

AMD Radeon R7 265X OEM 's Advantages

Released 1 years and 4 months late

Lower TDP (150W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 8990 OEM +72%

4.096 TFLOPS

Radeon R7 265X OEM

2.368 TFLOPS

Radeon HD 8990 OEM

VS

Radeon R7 265X OEM

Graphics Card

Apr 2013

Release Date

Aug 2014

Sea Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

950 MHz

Base Clock

900 MHz

1000 MHz

Boost Clock

925 MHz

1500 MHz

Memory Clock

1400 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

256bit

288.0GB/s

Bandwidth

179.2GB/s

Render Config

32

Compute Units

20

-

2048

Shading Units

1280

128

TMUs

80

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

512 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

29.60 GPixel/s

128.0 GTexel/s

Texture Rate

74.00 GTexel/s

-

4.096 TFLOPS

FP32 (float)

2.368 TFLOPS

1024 GFLOPS

FP64 (double)

148.0 GFLOPS

Board Design

375W

TDP

150W

750 W

Suggested PSU

450 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Malta

GPU Name

Curacao

Malta XT (215-0849026)

GPU Variant

Curacao PRO (215-0848000)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

2.8 billion

365 mm²

Die Size

212 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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