645 OEM vs 980 SLI Mobile

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General info

GPU architecture, market segment, value for money and other general parameters compared.

Place in performance ranking108not rated
Place by popularitynot in top-100not in top-100
Value for money76.63no data
ArchitectureMaxwell (2014−2018)Kepler (2012−2018)
GPU code nameN16E-GXX SLIGK106
Market segmentLaptopDesktop
Release date22 September 2015 (8 years old)22 April 2013 (10 years old)
Current price$301 no data
Value for money

Performance to price ratio. The higher, the better.

no data

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores4096576
Core clock speed1126 MHz824 MHz
Boost clock speed1228 MHzno data
Number of transistors10400 Million2,540 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)330 Watt65 Watt
Texture fill rateno data39.55
Floating-point performanceno data949.2 gflops

Size and compatibility

Information on GeForce GTX 980 SLI Mobile and GeForce GTX 645 OEM compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Laptop sizelargeno data
Interfaceno dataPCIe 3.0 x16
Lengthno data147 mm
Widthno data1-slot
Supplementary power connectorsno dataNone
SLI options+no data

Memory

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR5GDDR5
Maximum RAM amount2x 8 GB1 GB
Memory bus width256 Bit128 Bit
Memory clock speed3500 MHz4000 MHz
Memory bandwidthno data64 GB/s
Shared memory-no data

Video outputs and ports

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectorsno data1x DVI, 1x HDMI, 1x DisplayPort
HDMIno data+
G-SYNC support+no data

API support

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX12_112 (11_0)
Shader Modelno data5.1
OpenGLno data4.6
OpenCLno data1.2
Vulkanno data1.1.126
CUDA+3.0

Advantages and disadvantages


Recency 22 September 2015 22 April 2013
Power consumption (TDP) 330 Watt 65 Watt

We couldn't decide between GeForce GTX 980 SLI Mobile and GeForce GTX 645 OEM. We've got no test results to judge.

Be aware that GeForce GTX 980 SLI Mobile is a notebook card while GeForce GTX 645 OEM is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


NVIDIA GeForce GTX 980 SLI Mobile
GeForce GTX 980 SLI Mobile
NVIDIA GeForce GTX 645 OEM
GeForce GTX 645 OEM

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User ratings: view and submit

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3.3 65 votes

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4 65 votes

Rate NVIDIA GeForce GTX 645 OEM on a scale of 1 to 5:

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Questions and comments

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