AMD Radeon HD 7790 vs NVIDIA GeForce GTX 645 OEM

VS

AMD Radeon HD 7790

NVIDIA GeForce GTX 645 OEM

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7790 and 1024MB VRAM GeForce GTX 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7790 's Advantages

Larger VRAM bandwidth (96.00GB/s vs 64.00GB/s)

320 additional rendering cores

NVIDIA GeForce GTX 645 OEM 's Advantages

Lower TDP (65W vs 85W)

Score

Benchmark

FP32 (float)

Radeon HD 7790 +88%

1.792 TFLOPS

GeForce GTX 645 OEM

0.949 TFLOPS

Radeon HD 7790

VS

GeForce GTX 645 OEM

Graphics Card

Mar 2013

Release Date

Apr 2013

Southern Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

96.00GB/s

Bandwidth

64.00GB/s

Render Config

14

Compute Units

-

896

Shading Units

576

56

TMUs

48

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

9.888 GPixel/s

56.00 GTexel/s

Texture Rate

39.55 GTexel/s

-

1.792 TFLOPS

FP32 (float)

949.2 GFLOPS

112.0 GFLOPS

FP64 (double)

39.55 GFLOPS

Board Design

85W

TDP

65W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

1x 6-pin

Power Connectors

None

Graphics Processor

Bonaire

GPU Name

GK106

Bonaire XT (215-0839039)

GPU Variant

GK106-200-A1

GCN 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

2.54 billion

160 mm²

Die Size

221 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.0

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.3

Shader Model

5.1

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