AMD Radeon R9 390 X2 vs NVIDIA GeForce GT 620

VS

AMD Radeon R9 390 X2 NVIDIA GeForce GT 620

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 X2 and 1024MB VRAM GeForce GT 620 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 X2 's Advantages

Released 3 years and 4 months late

More VRAM (8GB vs 1GB)

Larger VRAM bandwidth (345.6GB/s vs 14.40GB/s)

2464 additional rendering cores

NVIDIA GeForce GT 620 's Advantages

Lower TDP (49W vs 580W)

Score

Benchmark

FP32 (float)

Radeon R9 390 X2 +1803%

5.12 TFLOPS

GeForce GT 620

0.269 TFLOPS

Radeon R9 390 X2

VS

GeForce GT 620

Graphics Card

Sep 2015

Release Date

May 2012

Pirate Islands

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1350 MHz

Memory Clock

900 MHz

Memory

8GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

512bit

Memory Bus

64bit

345.6GB/s

Bandwidth

14.40GB/s

Render Config

-

SM Count

2

40

Compute Units

-

2560

Shading Units

96

160

TMUs

16

64

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

128 KB

Theoretical Performance

64.00 GPixel/s

Pixel Rate

2.800 GPixel/s

160.0 GTexel/s

Texture Rate

11.20 GTexel/s

-

FP16 (half)

-

5.120 TFLOPS

FP32 (float)

268.8 GFLOPS

640.0 GFLOPS

FP64 (double)

22.40 GFLOPS

Graphics Processor

Grenada

GPU Name

GF108

Grenada PRO (215-0880030)

GPU Variant

GF108-100-KB-A1

GCN 2.0

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

6.2 billion

Transistors

0.585 billion

438 mm²

Die Size

116 mm²

Board Design

580W

TDP

49W

950 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

4x 8-pin

Power Connectors

None

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

2.1

6.3

Shader Model

5.1

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