ATI Radeon HD 2900 XT vs NVIDIA GeForce GTX 680 Mac Edition

VS

ATI Radeon HD 2900 XT

NVIDIA GeForce GTX 680 Mac Edition

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XT and 2GB VRAM GeForce GTX 680 Mac Edition 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 5 years and 11 months late

Boost Clock1058MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (192.3GB/s vs 106.0GB/s)

1216 additional rendering cores

Lower TDP (195W vs 215W)

Score

Benchmark

FP32 (float)

Radeon HD 2900 XT

0.476 TFLOPS

GeForce GTX 680 Mac Edition +582%

3.25 TFLOPS

Radeon HD 2900 XT

VS

GeForce GTX 680 Mac Edition

Graphics Card

May 2007

Release Date

Apr 2013

Radeon R600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

1006 MHz

-

Boost Clock

1058 MHz

828 MHz

Memory Clock

1502 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

512bit

Memory Bus

256bit

106.0GB/s

Bandwidth

192.3GB/s

Render Config

4

Compute Units

-

320

Shading Units

1536

16

TMUs

128

16

ROPs

32

-

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

11.89 GPixel/s

Pixel Rate

33.86 GPixel/s

11.89 GTexel/s

Texture Rate

135.4 GTexel/s

-

475.5 GFLOPS

FP32 (float)

3.250 TFLOPS

-

FP64 (double)

135.4 GFLOPS

Board Design

215W

TDP

195W

550 W

Suggested PSU

450 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

R600

GPU Name

GK104

R600 XT (215RGMDKA13FG)

GPU Variant

GK104-400-A2

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.72 billion

Transistors

3.54 billion

420 mm²

Die Size

294 mm²

Graphics Features

10.0 (10_0)

DirectX

12 (11_0)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.0

4.0

Shader Model

5.1

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