AMD Radeon R9 390 X2 vs NVIDIA GeForce GTX 490

VS

AMD Radeon R9 390 X2

NVIDIA GeForce GTX 490

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 X2 and 1536MB VRAM GeForce GTX 490 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 X2 's Advantages

More VRAM (8GB vs 1536GB)

Larger VRAM bandwidth (345.6GB/s vs 164.0GB/s)

2080 additional rendering cores

NVIDIA GeForce GTX 490 's Advantages

Lower TDP (365W vs 580W)

Score

Benchmark

FP32 (float)

Radeon R9 390 X2 +339%

5.12 TFLOPS

GeForce GTX 490

1.166 TFLOPS

Radeon R9 390 X2

VS

GeForce GTX 490

Graphics Card

Sep 2015

Release Date

Unknown

Pirate Islands

Generation

GeForce 400

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1350 MHz

Memory Clock

854 MHz

Memory

8GB

Memory Size

1536MB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

384bit

345.6GB/s

Bandwidth

164.0GB/s

Render Config

40

Compute Units

-

SM Count

15

2560

Shading Units

480

160

TMUs

60

64

ROPs

48

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

768 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

18.24 GPixel/s

160.0 GTexel/s

Texture Rate

36.48 GTexel/s

-

5.120 TFLOPS

FP32 (float)

1166 GFLOPS

640.0 GFLOPS

FP64 (double)

145.8 GFLOPS

Board Design

580W

TDP

365W

950 W

Suggested PSU

750 W

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

Outputs

3x DVI 1x mini-DisplayPort

4x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Grenada

GPU Name

GF100

Grenada PRO (215-0880030)

GPU Variant

GF100-375-A3

GCN 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

6.2 billion

Transistors

3.1 billion

438 mm²

Die Size

529 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.0

6.3

Shader Model

5.1

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