AMD Radeon R5 235 OEM vs AMD Radeon HD 7990

VS

AMD Radeon R5 235 OEM

AMD Radeon HD 7990

We compared two Desktop platform GPUs: 1024MB VRAM Radeon R5 235 OEM and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 235 OEM 's Advantages

Released 8 months late

Lower TDP (35W vs 375W)

AMD Radeon HD 7990 's Advantages

Boost Clock1000MHz

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (288.0GB/s vs 14.40GB/s)

1888 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 235 OEM

0.248 TFLOPS

Radeon HD 7990 +1551%

4.096 TFLOPS

Radeon R5 235 OEM

VS

Radeon HD 7990

Graphics Card

Dec 2013

Release Date

Apr 2013

Volcanic Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

950 MHz

-

Boost Clock

1000 MHz

900 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

3GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

384bit

14.40GB/s

Bandwidth

288.0GB/s

Render Config

2

Compute Units

32

-

160

Shading Units

2048

8

TMUs

128

4

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

768 KB

-

Theoretical Performance

3.100 GPixel/s

Pixel Rate

32.00 GPixel/s

6.200 GTexel/s

Texture Rate

128.0 GTexel/s

-

248.0 GFLOPS

FP32 (float)

4.096 TFLOPS

-

FP64 (double)

1024 GFLOPS

Board Design

35W

TDP

375W

200 W

Suggested PSU

750 W

1x DVI 1x HDMI 1.3a

Outputs

1x DVI 4x mini-DisplayPort 1.2

None

Power Connectors

2x 8-pin

Graphics Processor

Caicos

GPU Name

Malta

Caicos XT (215-0804070)

GPU Variant

Malta XT (215-0849026)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

4.313 billion

67 mm²

Die Size

365 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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