NVIDIA GeForce GTX 680 Mac Edition vs AMD Radeon HD 6450

VS

NVIDIA GeForce GTX 680 Mac Edition

AMD Radeon HD 6450

We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 680 Mac Edition and 512MB VRAM Radeon HD 6450 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 680 Mac Edition 's Advantages

Released 2 years late

Boost Clock1058MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (192.3GB/s vs 25.60GB/s)

1376 additional rendering cores

AMD Radeon HD 6450 's Advantages

Lower TDP (18W vs 195W)

Score

Benchmark

FP32 (float)

GeForce GTX 680 Mac Edition +1525%

3.25 TFLOPS

Radeon HD 6450

0.2 TFLOPS

GeForce GTX 680 Mac Edition

VS

Radeon HD 6450

Graphics Card

Apr 2013

Release Date

Apr 2011

GeForce 600

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1006 MHz

Base Clock

-

1058 MHz

Boost Clock

-

1502 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

192.3GB/s

Bandwidth

25.60GB/s

Render Config

-

Compute Units

2

-

1536

Shading Units

160

128

TMUs

8

32

ROPs

4

-

16 KB (per SMX)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

33.86 GPixel/s

Pixel Rate

2.500 GPixel/s

135.4 GTexel/s

Texture Rate

5.000 GTexel/s

-

3.250 TFLOPS

FP32 (float)

200.0 GFLOPS

135.4 GFLOPS

FP64 (double)

-

Board Design

195W

TDP

18W

450 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

None

Graphics Processor

GK104

GPU Name

Caicos

GK104-400-A2

GPU Variant

Caicos PRO

Kepler

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

3.54 billion

Transistors

0.37 billion

294 mm²

Die Size

67 mm²

Graphics Features

12 (11_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

3.0

OpenCL

1.2

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

5.0

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