AMD Radeon HD 7990 vs NVIDIA GeForce GTX 650

VS

AMD Radeon HD 7990

NVIDIA GeForce GTX 650

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 1024MB VRAM GeForce GTX 650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7990 's Advantages

Released 7 months late

Boost Clock1000MHz

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (288.0GB/s vs 80.00GB/s)

1664 additional rendering cores

NVIDIA GeForce GTX 650 's Advantages

Lower TDP (65W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +404%

4.096 TFLOPS

GeForce GTX 650

0.812 TFLOPS

Radeon HD 7990

VS

GeForce GTX 650

Graphics Card

Apr 2013

Release Date

Sep 2012

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

1250 MHz

Memory

3GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

288.0GB/s

Bandwidth

80.00GB/s

Render Config

32

Compute Units

-

2048

Shading Units

384

128

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

8.464 GPixel/s

128.0 GTexel/s

Texture Rate

33.86 GTexel/s

-

4.096 TFLOPS

FP32 (float)

812.5 GFLOPS

1024 GFLOPS

FP64 (double)

33.86 GFLOPS

Board Design

375W

TDP

65W

750 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

2x DVI 1x mini-HDMI 1.4a

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Malta

GPU Name

GK107

Malta XT (215-0849026)

GPU Variant

GK107-450-A2

GCN 1.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

1.27 billion

365 mm²

Die Size

118 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.2

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

5.1

Shader Model

5.1

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