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Intel 750 Slow write and read speed


I got my new 750 400Gb NVMe drive a few days back, i've been trying to understand why the max throughput of the ssd is only

My system specs are:

Intel i7-4930K

Rampage IV Formula with latest BIOS-5001

32Gb Corsair Vengeance Pro 2400Mhz

Gigabyte GTX 980

Intel 750 NVMe 400Gb

Samsung 850 Pro 1Tb

Windows 10 Professional 64 bit

BIOS Settings:

CSM disabled

UEFI Secure boot Enabled

Boot device- Windows Boot Manager on Intel 750 Series

Intel 750 Driver version:

Link speed PCI-E 3.0 x4

I've also contacted directly Asus because of another issue that got up after i installed the 750 ssd, about the drives connected to the x79 chipset disappearing after reboot.

Only way to solve that issue at the moment is go to bios change storage mode to RAID reboot and then back to AHCI.

They replied that a bois update is on the way.

Any ideas why i don't get the full throughput of the 750 drive?

Thanks in advance.

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1 Reply
Honored Contributor II

Hello iFr0z3n,

The most relevant fact we noticed is that your motherboard is not certified to boot from the Intel® SSD 750 Series, so we cannot guarantee that it will operate according to specifications. You might want to check back with the motherboard manufacturer, they may be able to provide additional recommendations and configuration to improve the functionality of your PC.

For reference, you can review the document Intel® High Performance Solid-State Drives — Booting an NVMe* PCI Express* Solid State Drive, it contains some examples of BIOS configurations and requirements (Note: Intel® X79 Chipset motherboards were not tested/certified to operate with NVMe drives). Furthermore, if you have been informed by the Asus that they are working on a new BIOS, it may be good to wait and check if this helps with this situation as well.

In addition to this, please make sure you are using the Intel® Solid-State Drive Data Center Family for PCIe Drivers.

The advertised performance of this drive is found in page 8 of the Intel® SSD 750 Series Product Specifications. We cannot refer to the values you obtained in your test, since the test configuration are not the ones recommended to take advantage of the 750 features. We recommend using IOMeter* and modify the parameters depending on the type of test you are performing. For more information about this, you can review the document: Intel® SSD 750 Series — Performance Evaluation Guide