ATI Radeon HD 2900 XT vs NVIDIA GeForce GTX 745 OEM

VS

ATI Radeon HD 2900 XT

NVIDIA GeForce GTX 745 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XT and 4GB VRAM GeForce GTX 745 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 XT 's Advantages

Larger VRAM bandwidth (106.0GB/s vs 28.80GB/s)

NVIDIA GeForce GTX 745 OEM 's Advantages

Released 6 years and 9 months late

More VRAM (4GB vs 512GB)

64 additional rendering cores

Lower TDP (55W vs 215W)

Score

Benchmark

FP32 (float)

Radeon HD 2900 XT

0.476 TFLOPS

GeForce GTX 745 OEM +66%

0.793 TFLOPS

Radeon HD 2900 XT

VS

GeForce GTX 745 OEM

Graphics Card

May 2007

Release Date

Feb 2014

Radeon R600

Generation

GeForce 700

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

828 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

4GB

GDDR3

Memory Type

DDR3

512bit

Memory Bus

128bit

106.0GB/s

Bandwidth

28.80GB/s

Render Config

4

Compute Units

-

320

Shading Units

384

16

TMUs

24

16

ROPs

16

-

L1 Cache

64 KB (per SMM)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

11.89 GPixel/s

Pixel Rate

16.53 GPixel/s

11.89 GTexel/s

Texture Rate

24.79 GTexel/s

-

475.5 GFLOPS

FP32 (float)

793.3 GFLOPS

-

FP64 (double)

24.79 GFLOPS

Board Design

215W

TDP

55W

550 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 2.0 1x VGA

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

R600

GPU Name

GM107

R600 XT (215RGMDKA13FG)

GPU Variant

GM107-220-A2

TeraScale

Architecture

Maxwell

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.72 billion

Transistors

1.87 billion

420 mm²

Die Size

148 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

1.3

-

CUDA

5.0

4.0

Shader Model

5.1

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