06-01-202108:35 PM (Last edited 06-01-202108:37 PM) in
"This indicates a lack of connection between the 4 pcie lanes from the drive to the CPU" The 970 EVO in the same M2_1 slot gets from the processor all the PCIe Gen 3 x 4 lanes, as needed... 980 PRO should be at least the same 3 x 4, but it's having only 1 x 4... I forgot to say that when I changed Crucial 32GB (2x16GB) DDR4 4000 MHz Ballistix MAX back to the HyperX DDR4-2400 16384MB PC4-19200 (Kit of 2x8192) Fury Black (HX424C15FB2K2/16) on clean Win 10, with no updates, no Internet connection, no any drivers installed, only what comes on USB installation, 980 PRO runs well and stable, as the system or non-system disk. Once the Internet plugged in, or the chipset driver is installed - it gets unstable as disk "C", the blue screen comes up. But the speed stays 6700/5000 MB/s with HyperX DDR4-2400. Could the RAM Crucial 32GB Ballistix MAX and 980 PRO plugging on the same motherboard be causing this problem? As I understand, they both are plugged to CPU directly, without PCH. Seems like changing the RAM to enother one makes the difference... In fact, they both don't have official drivers at all 🙂 All separately works well. Together with 980 PRO it doesn't match... I will write on Asus forum, thank you. Is there any idea how to switch PCIe Gen 1 x 4 into PCIe Gen 4 x 4 on the 980 PRO?
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I9-11900K ASUS ROG STRIX Z590-I GAMING WIFI Crucial 32GB (2x16GB) DDR4 4000 MHz Ballistix MAX GIGABYTE GeForce GTX1060 6144Mb MINI ITX OC Windows 10 PRO x 64, USB installed from official Intel site. Samsung 980 PRO 1 TB is placed in NVME M2_1 PCIe 4.0 processor slot and the read/write speed is about 900/750 MB/s. It works stable as a secondary SSD. It doesn't work as the system disk "C" - I get eternal reboots, or blue screens: WHEA_UNCORRECTABLE_ERROR INACCESSIBLE_BOOT_DEVICE Sometimes, after reboot it does get half of speed - 3460/3330 MB/s. Once or twice I saw even normal speed 6700/5000 MB/s. But most of the times, when the PC is able to start, it gets 900/750 MB/s. On brand new Windows, with no drivers I get nice speed 6700/5000 MB/s: After installing the official chipset drivers it goes slow - 900/750 MB/s: I tried to connect it into second M2_2 PCIe 3.0 PCH slot - same thing. The firmware was updated to 3B2QGXA7, using the Samsung Magician. BIOS is updated, the latest (0707) I also tried previous (0605, 0402, 0232) - nothing changes. All the motherboard latest drivers from Asus official site are installed. First I bought 980 PRO 2TB. It caused the same thing, and I had to return it to the seller. After a while I took the 980 PRO 1TB. Two disks - same result. So I think both the disks 980 PRO 1 and 2 TB are OK. There must be something about drivers or the way the PC parts mach each other. As I see, it works in PCIe Gen 1 mode with x4 lines, right? PCIe Gen 1 gives 200 MB/s x 4 = ~800 MB/s. Why? Maybe I didn't do something I should, or I did something I shouldn't? The old one Samsung 970 250 GB in these both slots (M2_1 & M2_2) shows PCIe Gen 3 x 4 = 3430/1350 MB/s. It works perfectly: Please help 🙂
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