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February 24th, 2019 21:00
Dell G7 Nvme SSD upgrade help needed
Hi everyone, Hoping someone here can help. I have a G7 GTX 1060 with 16 GB RAM with BIOS 1.3. I upgraded from the standard SATA SSD to a HP NVME SSD EX920 512 GB. I've changed the BIOS to ACHI, did multiple clean install of Windows, but can't really get the 3000mb sequential read promised. On average it's 1700 mb, best about 2000. I'm not sure if I'm doing something wrong or if I'm expecting too much. Any help would be appreciated.
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speedstep
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March 6th, 2019 09:00
This model has X2 PCI-E instead of X4 for the NVME slot so you are getting what you can. Even worse the thunderbolt 3 port cannot be used to power the laptop. "You have attached a power adapter to a port that does not accept power."
I purchased a Dell G7 15 (7588) Feb 22, 2019.
Intel six-core Core i7-8750H processor, 16GB of DDR4 RAM, a 128GB solid-state boot drive and a traditional 1TB hard drive. $1099 at best buy.
The first thing I did was replace the 128 SSD with a 1 TB 970 EVO.
15.6-inch anti-glare full-HD (1920x1080) IPS-technology display, plus an Nvidia GeForce GTX 1060 processor with 6GB of GDDR5 RAM and Max-Q
faroche
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June 25th, 2019 11:00
The Dell G7 15 Setup and Specifications Manual says:
• SATA AHCI, Up to 6 Gbps
• PCIe 3 x4 NVME, Up to 32 Gbps
https://topics-cdn.dell.com/pdf/g-series-15-7588-laptop_setup-guide_en-us.pdf
I have the same performance issue with HP EX920 1 TB
Stvann
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July 3rd, 2019 20:00
I am also having the same issue with my HP EX920 1TB. It's not happening with my Toshiba xg5 I'm getting 2700MBPS+ READ so it's not the laptop. I'm thinking it's the drivers.
speedstep
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September 3rd, 2019 08:00
Rate: up to 32 Gbps (PCIe) 6 Gbps (SATA) is theoretic speed not guaranteed performance.
THE Bps is bits per second so you divide by 8 to get BYTES per second.
There is also the issue of sample size and random vs sequential.
PCIe 1.x - 250Mb/s per lane (4x = 4 lanes)
PCIe 2.0 - 500Mb/s per lane (thus 4x PCIe 2.0 is 2Gb/s)
PCIe 3.0 - 1000Mb/s per lane ( thus 4x PCIe 3.0 is 4Gb/s)
Getting over 600Mb/s means its definitely not SATA speed.