AMD Radeon HD 7720 OEM vs AMD Radeon HD 7990

VS

AMD Radeon HD 7720 OEM

AMD Radeon HD 7990

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7720 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 HD 7720 OEM 's Advantages

Lower TDP (150W vs 375W)

AMD Radeon HD 7990 's Advantages

Boost Clock1000MHz

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (288.0GB/s vs 134.4GB/s)

1248 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7720 OEM

1.344 TFLOPS

Radeon HD 7990 +204%

4.096 TFLOPS

Radeon HD 7720 OEM

VS

Radeon HD 7990

Graphics Card

Mar 2013

Release Date

Apr 2013

Southern 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

1050 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

134.4GB/s

Bandwidth

288.0GB/s

Render Config

10

Compute Units

32

-

800

Shading Units

2048

40

TMUs

128

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

26.88 GPixel/s

Pixel Rate

32.00 GPixel/s

33.60 GTexel/s

Texture Rate

128.0 GTexel/s

-

1344 GFLOPS

FP32 (float)

4.096 TFLOPS

-

FP64 (double)

1024 GFLOPS

Board Design

150W

TDP

375W

450 W

Suggested PSU

750 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

1x DVI 4x mini-DisplayPort 1.2

-

Power Connectors

2x 8-pin

Graphics Processor

Barts

GPU Name

Malta

Barts LE (215-0798002)

GPU Variant

Malta XT (215-0849026)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

4.313 billion

255 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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