Today we have the specifications of GeForce GTX 990M, something possible to neglect from ASUS side at IFA 2015 when they showcase their Asus GX700.  Asus GX700 is based on the high-end GPU from the NVIDIA’s notebook segment, which makes use of FULL Maxwell GM204 graphics core, this means that we have a desktop version of GeForce GTX 980 in a laptop.

NVIDIA GeForce GTX 990M is as Powerful as a GTX 980 desktop version

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In terms of specifications GeForce GTX 990M has 2048 CUDA Cores, 128 TMUs and 64 ROPs to a base frequency of 1190 MHz coupled with  8192 MB of GDDR5 memory @ 6000 MHz, which together with a memory interface of 256 bits  gives a boost of 160 GB / s bandwidth, slightly less powerful than its desktop version, but the reason behind doubled the memory is completely unnecessary and it will affect the price.

NVIDIA GeForce GTX 990M Specifications: 

GeForce
GTX 990M
GeForce
GTX 980M
GeForce
GTX 980
GeForce
GTX 980 Ti
CUDA Cores 2,048 1,536 2,048 2,816
Base Frequency 1,190 MHz 1,038 MHz 1,126 MHz 1,000 MHz
Turbo frequency ? ? 1,240 MHz 1,202 MHz
SP-GFLOPs 4,874 GFLOPs 3,189 GFLOPs 5,079 GFLOPs 6,770 GFLOPs
ROPs 64 64 64 96
Pixel fillrate 76,160 MPix / s 66,400 MPix / s 79,360 MPix / s 105,776 MPix / s *
TMUs 128 96 128 176
Texture fillrate 152,320 Mtex / s 99,600 Mtex / s 158,720 Mtex / s 211,552 Mtex / s
DirectX (Feature-Level) 12.1 12.1 12.1 12.1
Memory 8192 MB GDDR5 4096 MB GDDR5
8,192 MB GDDR5
4096 MB GDDR5 6144 GDDR5
Memory speed 2,500 MHz 2,500 MHz 3,506 MHz 3,506 MHz
Memory Interface 256 Bit 256 Bit 256 Bit 384 Bit
Bandwidth 160,000 MB / s 160,000 MB / s 224 384 MB / s 336 576 MB / s

Via: ComputerBase