AMD Radeon HD 7990 vs NVIDIA GeForce GTX 275 PhysX Edition

VS

AMD Radeon HD 7990

NVIDIA GeForce GTX 275 PhysX Edition

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 896MB VRAM GeForce GTX 275 PhysX Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages

Released 3 years and 2 months late

Boost Clock1000MHz

More VRAM (3GB vs 896GB)

Larger VRAM bandwidth (288.0GB/s vs 127.0GB/s)

1808 additional rendering cores

NVIDIA GeForce GTX 275 PhysX Edition 's Advantages

Lower TDP (219W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +558%

4.096 TFLOPS

GeForce GTX 275 PhysX Edition

0.622 TFLOPS

Radeon HD 7990

VS

GeForce GTX 275 PhysX Edition

Graphics Card

Apr 2013

Release Date

Feb 2010

Southern Islands

Generation

GeForce 200

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

1134 MHz

Memory

3GB

Memory Size

896MB

GDDR5

Memory Type

GDDR3

384bit

Memory Bus

448bit

288.0GB/s

Bandwidth

127.0GB/s

Render Config

32

Compute Units

-

SM Count

30

2048

Shading Units

240

128

TMUs

80

32

ROPs

28

-

16 KB (per CU)

L1 Cache

-

768 KB

L2 Cache

224 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

17.72 GPixel/s

128.0 GTexel/s

Texture Rate

50.64 GTexel/s

-

4.096 TFLOPS

FP32 (float)

622.1 GFLOPS

1024 GFLOPS

FP64 (double)

77.76 GFLOPS

Board Design

375W

TDP

219W

750 W

Suggested PSU

550 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Malta

GPU Name

G92B

Malta XT (215-0849026)

GPU Variant

G92-421-B1

GCN 1.0

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

4.313 billion

Transistors

0.754 billion

365 mm²

Die Size

260 mm²

Graphics Features

12 (11_1)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

1.3

5.1

Shader Model

4.0

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