ATI Radeon HD 2900 XTX vs NVIDIA GeForce GT 640 OEM

VS

ATI Radeon HD 2900 XTX NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 XTX and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 2900 XTX 's Advantages

Larger VRAM bandwidth (106.0GB/s vs 28.51GB/s)

NVIDIA GeForce GT 640 OEM 's Advantages

64 additional rendering cores

Lower TDP (50W vs 240W)

Score

Benchmark

FP32 (float)

Radeon HD 2900 XTX

0.476 TFLOPS

GeForce GT 640 OEM +28%

0.612 TFLOPS

Radeon HD 2900 XTX

VS

GeForce GT 640 OEM

Graphics Card

Unknown

Release Date

Apr 2012

Radeon R600

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

828 MHz

Memory Clock

891 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

512bit

Memory Bus

128bit

106.0GB/s

Bandwidth

28.51GB/s

Render Config

-

SM Count

-

4

Compute Units

-

320

Shading Units

384

16

TMUs

32

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

Theoretical Performance

11.89 GPixel/s

Pixel Rate

6.376 GPixel/s

11.89 GTexel/s

Texture Rate

25.50 GTexel/s

-

FP16 (half)

-

475.5 GFLOPS

FP32 (float)

612.1 GFLOPS

-

FP64 (double)

25.50 GFLOPS

Graphics Processor

R600

GPU Name

GK107

R600 XTX A11 (215RGMDKA11FG)

GPU Variant

GK107-320-A2

TeraScale

Architecture

Kepler

TSMC

Foundry

TSMC

80 nm

Process Size

28 nm

0.72 billion

Transistors

1.27 billion

420 mm²

Die Size

118 mm²

Board Design

240W

TDP

50W

550 W

Suggested PSU

250 W

2x DVI 1x S-Video

Outputs

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

2x 6-pin

Power Connectors

None

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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