Questions tagged [pci-express]

PCI-Express is a high-speed expansion bus which is developed to replace older buses such as PCI and AGP. The most common use of PCI-Express is the GPU installation on motherboards.

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15 views

What does “Connectors with shared bandwidth” mean on a motherboard?

I have a z590-E with the following in the manual... The problem is there is no context given to the "configurations" and I am not sure what it is trying to tell me. I seem to not be able to ...
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Adding a Second GPU to my motherboard and Getting black screen on Startup

So, I tried connecting a second GPU, a GTX 1060 6GB to the second PCIEx16 slot via Riser cable USB in my MSI b550 Tomahawk mobo, and when I turn on my computer I just get a black screen and the VGA ez-...
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How to find out whether my platform supports CLKREQ#? [closed]

I succeeded entering ASPM L1.1 and L1.2 for my device. After entering ASPM L1.1 or L1.2 and trying to initiate to exit from Host side, I saw some hosts that are: • Able to initiate an exit from ASPM ...
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Graphics card power consumption regarding PCI power and 6-Pin power [duplicate]

I am aware that the PCI-E slot can power up to 75W and so can the 6 pin molex power cable, I was wondering if the power draw is split evenly between both the PCI and 6 pin cable, for example would a ...
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ASUS ROG Strix B550-E Gaming vs NVIDIA K80 and Linux

Does the ASUS ROG Strix B550-E Gaming mainboard support above 4GB PCIe addressing? I want to attach a NVIDIA k80 compute card that requires 64 Bit BAR but I could not find any information about that ...
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PCIe lanes requirement on Z390

Even after reading several related questions and answers I'm still not sure if I got it right so I'm asking this just to make sure I am. I'd like to build s PC based on Asus WS Z390 PRO with 4 GPUs ...
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ASUS Z270G Motherboard not recognizes GPU on PCI-E (x1) Riser Boards

I have a PC with a ASUS Z270G Motherboard, i7 7700 and two GPUs (a GTX 1070 Ti and another GTX1070). The issue is that running both GPUs on the PCI-E x16 slots in my motherboard does not offer ...
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M.2 M-key SSD but Sata Slot?

M.2 Slot 1x 2280 SATA M.2 (M key) slot This is the listed spec for my laptop model. When I open my laptop, the slot is also a pure m key slot. I did some research and it mentioned m-key slots are ...
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Can anyone tell if it is m.2 PCIe gen3x4 port?

Can anyone tell is it PCIe gen3x4 m.2 ssd port? Will it support m.2 nvme ssd? Thanks.
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Pci device not showing up

Sorry if the question has been answered before but my google skills are at an end. I'm running Proxmox 6.3-6 on a Supermicro A1SAM-2550F Motherboard and want to connect an Atheros AR5BXB92 / AR9280 ...
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Can I insert an M.2 pci-e 3.0 x4 on an M.2 slot that only supports pci-e 2.0?

My motherboard is an Asus prime h310m-c and the ssd that I wanted to buy is xpg spectrix s40g m.2 2280 m.2 2280 . Will this work on my pc?
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Does leaving the GPU attached damage it if I never use it?

I've built my own server PC which has been up and running for about 2 weeks now. Since the initial setting-up of the OS, it has not been plugged into a monitor - I instead just access it via SSH from ...
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Dual different GPU display output

I have a m5a99fx pro 2.0 motherboard, with gtx 650 in the pcie port 1, I bought a gtx 970 and I want to use the gtx 650 for display output and 970 for work (3d rendering), the motherboard has 2 pcie ...
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How to Get Display from PCIE 3.0X16 Slot on my B550 Unify?

Trying to get some sort of display output using my second PCIE 3.0 X16 slot on my mobo. I can't seem to get it to work. Trying to run 2 GPU's on this mobo without a riser. Is this possible?
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Which Fenvi PCIE wifi cards work for Mac Pro 4,1?

My machine is an early 2009 Mac Pro with 32GB RAM, 1TB SSD, NVIDIA Quadro 4000 2GB. Now I need to upgrade my wifi and bt speed to take advantage of higher speeds offered for Internet. I want a PCIE ...
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My new PCIe card doesn't fit into my motherboard; whose fault is it?

A capacitor on my motherboard (an Asus Prime A320I-K) is preventing the PCIe card from going completely into the slot (and against the support bracket). The card can tilt about the point where the ...
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Adding Nvidia Tesla K80 to a consumer motherboard (x399)

I am building a computer to run molecular dynamics, and I have 2 Nvidia Tesla K80s that I would like to use as accelerators. I also have an old single slot Nvidia GPU that I am using as a display out ...
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How to use pci express serial card in raspberry pi compute module 4?

I'm running Raspberry Pi OS with desktop(Release date: January 11th 2021) in my raspberry pi compute module 4. pi@raspberrypi:~ $ uname -a Linux raspberrypi 5.10.16-v7l #1 SMP Tue Feb 23 19:01:18 CST ...
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How to understand what PCIe 3.0 vs 5.0 is on motherboard specs?

The latest motherboards that have been released seem to advertise PCIe 3.0 support, but the latest PCIe spec is 5.0 with 6.0 on the way. Are these latest motherboards really pinned to PCIe version 3.0,...
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Can you split a 8-pin EPS12V into 2 8-pin PCI-E

I have read it's not good to leave out the last two pins of the 8-pin PCI-E connectors as those are ground connector and can cause a ground loop without them. If your power supply has two 6-pin PCI-E ...
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2x 4 Pin CPU cable in EATX12V

I have the be quiet! power 9 psu and the asus prime b450-plus motherboard I'm using a external graphics card and a NVME SDD so I guess it'll use 2 PCIe ports. The manual says I have to plug in a 8 pin ...
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What is the purpose of M.2 key M config pins?

I am designing a device that shall use PE on the PC via M.2 key M socket, and I cannot find info about how to connect it properly. In different sources I see different info regarding M.2 config pins (...
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Addition of PCIEX4 NVMe M.2 expansion card disables graphics card

Problem Purchased HP EX950 1TB NVMe M.2 SSD and Orico NVME M.2 EXPANSION CARD (PCI-E 3.0 X4) When installed into PCI-E slots, graphics card seems to be disabled Display only comes from onboard/...
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record PCIe Bandwidth Utilization with nvidia-smi

I have a couple of questions regarding the utilization of the PCIe and nvidia-smi: What is exactly the PCIe Bandwidth Utilization shown in the Nvidia X server. I did not find any direct explanation ...
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Does PCIe 3×2 m.2 slot compatible with PCIe 3×4 nvme ssd? [duplicate]

My laptop has an m.2 slot which is PCIe gen 3×2 nvme SSD compatible. Now, Can I add a PCIe gen 3×4 nvme SSD On it? If yes then how much performance I will have to sacrifice? Both slot and SSD are 2280 ...
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PCI Express: Non-compliant slot detecting one card, but not another. How to find out why?

I have a Thinkpad X210 (51nb aftermarket motherboard). It has 2 mini PCIe slots, although one of them isn't technically supposed to be a mini PCIe slot, but mSATA. However, since the data lines on ...
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PCIe 4.0 NVMe Bottleneck on Asus ROG Crosshair Hero VIII

I have an AMD RYZEN 5800x and AMD RADEON 6900 XT atop an Asus ROG Crosshair Hero VIII occupied with one M.2 SSD in the top M.2 slot and four 2.5" SSDs in the top 4 of 8 SATA ports.    Also, I ...
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Does my laptop have PCI-E slot?

I have an ASUS TP300LA laptop and it is running slow now. I want to upgrade it using either PCI-E or SSD but I'm not sure if it has a PCI-E slot. I tried installing CPUID PC Wizard but there is an ...
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My computer's display goes black after a while of use, but it isn't the display. Is the issue my motherboard, or my GPU?

For reference, I am running Linux on my PC, but I know the issue isn't a software one, since I run Linux on all my machines and have on this one for a while, and this issue is relatively recent, so it ...
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PCIe x1 card disappears, only appears after moving it to x16 slot then back to x1 slot

I used a PCIe-x1 card to add more SATA ports for a Lenovo Ideacentre 3i. It worked, but sometimes the card just disappeared, no indicator light flashing when boot. I took it out then reseated the card,...
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Samsung 970 Evo Plus in PCIe adapter disconnecting when copying large files to it

I've just installed a new Samsung 970 EVO Plus NVMe in my computer as a storage drive for large files plus some swap. I've got an ASUS Rampage IV Extreme motherboard which doesn't have an M.2 slot, so ...
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PCIe to SATA Adapter - Can't use all 4 ports at the same time

I got an SSU-Tech SU-SA3004 4-Port PCIe to SATA Adapter. I was planning to use 3 of the ports, I was able to confirm that the drives were detected when I ran BIOS setup. However, not all drives showed ...
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x8/x8 bifurcation not enumerating both devices

I have a FPGA board with a PCIe 3.0 x16 edge connector. The FPGA (Xilinx Ultrascale) has multiple x8 PCIe hard-ip built in. The board has a PERSTN jumper to configure the PERSTN for x8 or x16. I ...
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Swapping Samsung EVO 980 from Intel to AMD chipset

I'm planning to upgrade the SSD in my Lenovo X1 Carbon (4th Gen) with either a Samsung EVO 970 Plus or an EVO 980 PRO. My X1 carbon has an M.2 PCIe 3.0 x4, so if I get the EVO 980 PRO, I won't be able ...
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What exactly does the spec “PCIe 3.0 x16 slot (x4)” mean?

I'm looking at the Asus Maximus XII Hero. Its webpage says it supports the following: MULTI-GPU SLI®/ CFX SUPPORT​ 2 x PCIe 3.0 x16 Safeslots (x16, x8/x8)​ 1 x PCIe 3.0 x16 slot (x4) I understand ...
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Hard drives connected to motherboard or via PCI Express card

I have a computer which has: SSD 550 GB drive connected with SATA directly to motherboard (ASUS Z170-K). This drive has Windows 10 installed and it set to boot. Two HDD 3 TB drives connected ...
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Booting from NVME SSD using SATA HDD

I have an old PC with ASUS m3a78 pro motherboard. I bought PCIe card with SSD. I install Xubuntu OS to SSD, but it is not possible to boot from it, because SSD is not visible in Boot menu or BIOS. So ...
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How do I work out if my PCIe is capable of splitting channels on a PCIe slot

I'm currently looking at options to repurpose an older machine (or potentially build a new storage server) in a year or two. One rather interesting potential piece of hardware is a card that would let ...
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Does RAM over PCIe exists?

This appears in lspci on my Dell XPS 13 9310: 0000:00:14.2 RAM memory: Intel Corporation Device a0ef (rev 20) Does RAM work over PCIe now?
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Can a ungrounded electrical system damage computer parts, such as a Wi-Fi card?

I bought an assembled pc, with components chosen by me, at a specialized store. The pc was new and was tested after assembly by the store technician. I used the pc for a couple of hours, with no ...
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How does a PCIe card behave when connected to fewer lanes of a higher version?

From what I've learned about PCIe I know that as long as it fits the physical slot, a card will operate fine when the number of electrical lanes differ or when the PCIe versions mismatch, albeit at a ...
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PCIExpress configuration header space. What are I/O space enable and memory space enable layouts in command register means

I am new to PCIe. In the latest specifications of PCI/PCIe 5.0 the description for I/O space enable and memory space enable layouts in command register field is the following: I/O Space Enable - ...
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Is there a way to distinguish between PCH and CPU connected PCIe slots on motherboard?

I have an ASUS prime z370-A motherboard. It has the following pcie ports layout (as can be seen on this picture https://www.asus.com/media/global/gallery/LABeazMNCf93fg9W_setting_fff_1_90_end_1000....
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42 views

More Speed for 4,1 Mac Pro?

I'm using an early 2009 Mac Pro, 4,1 2.66Ghz, 32 GB memory, 2TB HDD, GeForce GT 120. Tried the hack to 5,1 and it would not complete even though SIP was disabled. So won't be using Sierra, stuck with ...
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315 views

Can we connect PCIex4 card in PCIex16 slot?

After some research, it seems not to be a problem: Can I be 100% certain that a PCIe x4 card will fit in a PCIe x16 slot? Does a x4 PCIe mechanical work in a x16 slot in x4 mode? Even wikipedia says ...
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How does PCI-Express work at a software level?

At a software level, how do you communicate with a PCIe card? (I realise only the OS has to care about such details, but I'm overly curious...) I can imagine two possible ways it could work: Cards ...
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What type of an expansion slot is Half length Mini Card? Is it a Mini-PCIe?

I have just two SATA slots in my motherboard and both are occupied. I want to add a SSD. So I thought that if the expansion slot shown in the image is a mini PCIe ( I am not sure) then I could just ...
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4k views

NVMe PCIe x4 SSD on M.2 PCIe x2 slot?

i'm about to get a new SSD for my PC, and before spending the money i have some doubts about my decision i would like to clarify First, my mobo is a B450 Aorus Pro Wifi, it has 2 M.2 slots, one of ...
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How can I fit a big graphics card (like nvidia rtx 2070) in Intel S2600CP2J server board?

I have Intel S2600CP2J Server Motherboard 2x Noctua 2x Xeon E5-2670 CPU's Enthoo Pro Case (PH-Es614P_WT) 64gb RAM I want to fit a 2070rtx msi nvidia graphics card but I think if I put it in the PCIe ...
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Recommended 10Gb NIC in PCIe 4.0 1x slot? [duplicate]

I've been trying to figure this out for some time, and lots of googling has seen lots of discussion but no actual answers that I can find. I'm the happy owner of an AMD Ryzen system on an ASUS TUF ...

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