AMD Radeon HD 7990 vs ATI Radeon HD 5770 X2

VS

AMD Radeon HD 7990

ATI Radeon HD 5770 X2

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 1024MB VRAM Radeon HD 5770 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages

Released 2 years and 6 months late

Boost Clock1000MHz

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (288.0GB/s vs 76.80GB/s)

1248 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 7990 +201%

4.096 TFLOPS

Radeon HD 5770 X2

1.36 TFLOPS

Radeon HD 7990

VS

Radeon HD 5770 X2

Graphics Card

Apr 2013

Release Date

Oct 2010

Southern Islands

Generation

Evergreen

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

1200 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

288.0GB/s

Bandwidth

76.80GB/s

Render Config

32

Compute Units

10

-

2048

Shading Units

800

128

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

13.60 GPixel/s

128.0 GTexel/s

Texture Rate

34.00 GTexel/s

-

4.096 TFLOPS

FP32 (float)

1360 GFLOPS

1024 GFLOPS

FP64 (double)

-

Board Design

375W

TDP

Unknown

750 W

Suggested PSU

200 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

-

Graphics Processor

Malta

GPU Name

Juniper

Malta XT (215-0849026)

GPU Variant

Juniper XT (215-0754013)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

1.04 billion

365 mm²

Die Size

166 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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