NVIDIA GeForce GT 645 OEM vs AMD Radeon R9 390 X2

VS

NVIDIA GeForce GT 645 OEM

AMD Radeon R9 390 X2

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 645 OEM 's Advantages

Lower TDP (102W vs 580W)

AMD Radeon R9 390 X2 's Advantages

Released 3 years and 5 months late

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (345.6GB/s vs 91.87GB/s)

2272 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 645 OEM

0.894 TFLOPS

Radeon R9 390 X2 +472%

5.12 TFLOPS

GeForce GT 645 OEM

VS

Radeon R9 390 X2

Graphics Card

Apr 2012

Release Date

Sep 2015

GeForce 600

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

957 MHz

Memory Clock

1350 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

512bit

91.87GB/s

Bandwidth

345.6GB/s

Render Config

-

Compute Units

40

6

SM Count

-

288

Shading Units

2560

48

TMUs

160

24

ROPs

64

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

1024 KB

-

Theoretical Performance

9.312 GPixel/s

Pixel Rate

64.00 GPixel/s

37.25 GTexel/s

Texture Rate

160.0 GTexel/s

-

894.0 GFLOPS

FP32 (float)

5.120 TFLOPS

74.50 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

102W

TDP

580W

300 W

Suggested PSU

950 W

2x DVI 1x mini-HDMI 1.3a

Outputs

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

-

Power Connectors

4x 8-pin

Graphics Processor

GF114

GPU Name

Grenada

-

GPU Variant

Grenada PRO (215-0880030)

Fermi 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.95 billion

Transistors

6.2 billion

332 mm²

Die Size

438 mm²

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.1

OpenCL

2.0

N/A

Vulkan

1.2

2.1

CUDA

-

5.1

Shader Model

6.3

Related GPU Comparisons

1

NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GTX 560 OEM

2

NVIDIA GeForce GT 645 OEM vs AMD Radeon HD 6530

3

NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 4670 X2

4

NVIDIA GeForce GT 645 OEM vs AMD Radeon RX 8800 XT

5

NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GT 1030 GK107

6

NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GT 530 OEM

7

NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 5450 PCIe x1

8

NVIDIA GeForce GT 645 OEM vs NVIDIA Quadro FX 550

9

NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GT 130 OEM

10

NVIDIA GeForce GT 645 OEM vs ATI Radeon HD 4570

Related News

1

Continuous Decline in DRAM Memory Prices: Downward Trend Intensifies

2

NVIDIA GB202 Chip Unveiled for the First Time, to be Used in RTX 5090 with 512-bit GDDR7 Memory

3

Strix Halo Integrated Graphics Score Appears on Passmark, Currently Slightly Below RTX 3060 12GB

4

AMD Unveils New RX 9070 XT Graphics Card Performance: Positioned Between RX 7900 GRE and RX 7900 XT

5

Double the Excitement! AMD FSR 4.0 to Launch Alongside RX 9070 XT Graphics Card

6

CPU-Z Minor Update: Support for Intel's Four New Products and New Memory

7

CXMT Reportedly Achieves 80% Yield in DDR5 Production

8

Intel Wildcat Lake Appears on Shipping List with FCBGA1516 Socket, Poised to Replace Alder Lake-N

9

The Commencement of ARM and Qualcomm Licensing Dispute Trial: Potential Major Impact on PC Market

10

NVIDIA Allegedly Equips RTX 5080 with 30Gbps Memory Speed, Other Models to Feature 28Gbps