AMD Radeon HD 7990 vs NVIDIA GeForce GTX 555 OEM

VS

AMD Radeon HD 7990

NVIDIA GeForce GTX 555 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 1024MB VRAM GeForce GTX 555 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages

Released 1 years and 11 months late

Boost Clock1000MHz

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (288.0GB/s vs 91.87GB/s)

1760 additional rendering cores

NVIDIA GeForce GTX 555 OEM 's Advantages

Lower TDP (150W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +383%

4.096 TFLOPS

GeForce GTX 555 OEM

0.848 TFLOPS

Radeon HD 7990

VS

GeForce GTX 555 OEM

Graphics Card

Apr 2013

Release Date

May 2011

Southern Islands

Generation

GeForce 500

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

957 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

192bit

288.0GB/s

Bandwidth

91.87GB/s

Render Config

32

Compute Units

-

SM Count

6

2048

Shading Units

288

128

TMUs

48

32

ROPs

24

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

768 KB

L2 Cache

384 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

8.832 GPixel/s

128.0 GTexel/s

Texture Rate

35.33 GTexel/s

-

4.096 TFLOPS

FP32 (float)

847.9 GFLOPS

1024 GFLOPS

FP64 (double)

70.66 GFLOPS

Board Design

375W

TDP

150W

750 W

Suggested PSU

450 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.3a

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Malta

GPU Name

GF114

Malta XT (215-0849026)

GPU Variant

GF114-200-KB-A1

GCN 1.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

4.313 billion

Transistors

1.95 billion

365 mm²

Die Size

332 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

5.1

Shader Model

5.1

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