NVIDIA GeForce GTX 650 vs ATI Radeon HD 2900 XT

VS

NVIDIA GeForce GTX 650

ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GTX 650 and 512MB VRAM Radeon HD 2900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 650 's Advantages

Released 5 years and 4 months late

More VRAM (1024GB vs 512GB)

64 additional rendering cores

Lower TDP (65W vs 215W)

ATI Radeon HD 2900 XT 's Advantages

Larger VRAM bandwidth (106.0GB/s vs 80.00GB/s)

Score

Benchmark

FP32 (float)

GeForce GTX 650 +70%

0.812 TFLOPS

Radeon HD 2900 XT

0.476 TFLOPS

GeForce GTX 650

VS

Radeon HD 2900 XT

Graphics Card

Sep 2012

Release Date

May 2007

GeForce 600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

828 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

512bit

80.00GB/s

Bandwidth

106.0GB/s

Render Config

-

Compute Units

4

-

384

Shading Units

320

32

TMUs

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

8.464 GPixel/s

Pixel Rate

11.89 GPixel/s

33.86 GTexel/s

Texture Rate

11.89 GTexel/s

-

812.5 GFLOPS

FP32 (float)

475.5 GFLOPS

33.86 GFLOPS

FP64 (double)

-

Board Design

65W

TDP

215W

250 W

Suggested PSU

550 W

2x DVI 1x mini-HDMI 1.4a

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK107

GPU Name

R600

GK107-450-A2

GPU Variant

R600 XT (215RGMDKA13FG)

Kepler

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

1.27 billion

Transistors

0.72 billion

118 mm²

Die Size

420 mm²

Graphics Features

12 (11_0)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3 (full) 4.0 (partial)

3.0

OpenCL

N/A

1.1

Vulkan

N/A

3.0

CUDA

-

5.1

Shader Model

4.0

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