ATI Radeon HD 2900 XT vs NVIDIA GeForce GTX 780 Rev. 2

VS

ATI Radeon HD 2900 XT

NVIDIA GeForce GTX 780 Rev. 2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XT and 3GB VRAM GeForce GTX 780 Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 XT 's Advantages

Lower TDP (215W vs 250W)

NVIDIA GeForce GTX 780 Rev. 2 's Advantages

Released 6 years and 4 months late

Boost Clock902MHz

More VRAM (3GB vs 512GB)

Larger VRAM bandwidth (288.4GB/s vs 106.0GB/s)

1984 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 2900 XT

0.476 TFLOPS

GeForce GTX 780 Rev. 2 +773%

4.156 TFLOPS

Radeon HD 2900 XT

VS

GeForce GTX 780 Rev. 2

Graphics Card

May 2007

Release Date

Sep 2013

Radeon R600

Generation

GeForce 700

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

863 MHz

-

Boost Clock

902 MHz

828 MHz

Memory Clock

1502 MHz

Memory

512MB

Memory Size

3GB

GDDR3

Memory Type

GDDR5

512bit

Memory Bus

384bit

106.0GB/s

Bandwidth

288.4GB/s

Render Config

4

Compute Units

-

320

Shading Units

2304

16

TMUs

192

16

ROPs

48

-

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

1536 KB

-

Theoretical Performance

11.89 GPixel/s

Pixel Rate

43.30 GPixel/s

11.89 GTexel/s

Texture Rate

173.2 GTexel/s

-

475.5 GFLOPS

FP32 (float)

4.156 TFLOPS

-

FP64 (double)

173.2 GFLOPS

Board Design

215W

TDP

250W

550 W

Suggested PSU

600 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

1x 6-pin + 1x 8-pin

Graphics Processor

R600

GPU Name

GK110B

R600 XT (215RGMDKA13FG)

GPU Variant

GK110-300-B1

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.72 billion

Transistors

7.08 billion

420 mm²

Die Size

561 mm²

Graphics Features

10.0 (10_0)

DirectX

12 (11_1)

3.3 (full) 4.0 (partial)

OpenGL

4.6

N/A

OpenCL

3.0

N/A

Vulkan

1.1

-

CUDA

3.5

4.0

Shader Model

5.1

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