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 PIC-Express is the GPU installation on motherboards.

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x16/x16 vs x8/x8

I am considering purchasing an LGA1155 board but dual GPUs they only run at x8/x8. From my research it seems that you lose about 1-3% tops when running at 2500*1600 but a lot more when running games ...
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Does a PCIe to dual mini-PCIe adapter exist?

I'm planning to make a home server that would serve as NAS, router and Wi-Fi access point. It should be small, so I choose mini-ITX form-factor which often has only one PCIe slot. I want a powerfull ...
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2k views

Do PCI / PCIe buses and devices always enumerate in the same order?

I am looking into a situation where there are multiple, identical (National Instruments) PCIe DAQ modules in a PCI/PCIe chassis, connected via either a single or dual chassis controller. In the worst ...
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748 views

Mac mini [A1176] SSD in PCIe slot?

I have made some modifications to an old mac mini i picked up. I’ve omitted the optical drive and have two 750GB WD drives installed, maxed the RAM and upgraded the CPU for a core2duo. Now I’d like ...
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536 views

PCI-E bottleneck when transferring data between CPU and GPU

I've read that the transfer overhead between CPU and GPU is a big bottleneck in achieving high performance in GPU/CPU applications. Why is this so? According to Nvidia's bandwidthtest program, my ...
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23 views

Unbind a driver from PCIe device on windows

To unbind a driver from the device on Linux, we can use echo 0000:00:dev > /sys/bus.../unbind. This just unbinds the driver from device and we don't need to uninstall the entire driver. I want to ...
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335 views

Plugging in a GPU into a PCI slot via a PCI-e to PCI converter: is it possible?

First of all, this is for a GPGPU project so I only need a very small amount of bandwidth. The bandwidth for PCI and PCI-e 1x slots are several orders of magnitude more than I need. Some people have ...
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42 views

Searching for PCI-Express 2.0 compatible AMD graphics cards (with CrossFireX)

I still have an Asus AMD motherboard (Socket AM3+) that has PCI-Express 2.0/2.0x16 slots. It appears that all the HD Radeon series 6000-7000 cards are PCI 3.0. Are there any HD Radeon cards ...
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10 views

AzureWave AR5B93 in Debian

I installed debian on my laptop few months ago. Everything was great and there were no (well, only a few) problems. I removed the wireless card (An AzureWave AR5B93), and today when I tried to put it ...
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31 views

What version expresscard slot do I have?

My laptop Elitebook 8640p has a Express card slot. But i dont know version of this Pci-e slot. Please help me detect version of this PIC-e slot (ver 1.0 or ver 2.0). This is result of PC-wizard ...
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32 views

How to control PCIe power?

Is there any consumer-grade motherboard (for Intel i3/i5/i7 CPUs) that lets me physically power on/off PCIe slots? PCIe slots are on motherboards, so I guess a motherboard can easily power up/down ...
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Tesla K20 PCIe 2.0 limit in driver or VBIOS?

I have multiple Sandy Bridge/Sandy Bridge-E GPU/CUDA development machines and while I could get both GeForce GTX680 and TITAN to work in PCIe 3.0 mode (using the NVreg_EnablePCIeGen3 driver option, ...
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308 views

Adding eSATA PCI Express card

I've tried to add a PCI Express card to be able to plug eSATA hard drives to my home server (running Proxmox). Everything is plugged but I'm stuck. Is there any thing to do to setup the PCI card ? ...
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154 views

same pci bus address for pci slot and on board ethernet port?

The pci slot address shown is same as the one shown for on board ethernet card. There is a conflict. Not sure how to resolve it. Various command output are dmidecode -t 9 | grep 'Bus Address' ...
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212 views

My computers startup got slow after changing the PCIe which my graphic card was installed

I recently found that that i had my graphic card installed on the wrong PCIe. Instead of using the 16x one (for Express 3.0) i was using the 8x one. So i just unplugged my graphic card from the 8x and ...
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102 views

How to Perform Full Power Cycle on Reboot

Hopefully this is the place to ask this. My problem is that I have a PCIe device I'm trying to use on a home built computer. The card will only work on a full power cycle of the computer. I've tried ...
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104 views

Mini PCIe wireless card, Shuttle SZ68R5

I know very little about (wireless) networking. I just bought and installed the Intel Centrino Ultimate-N 6300, but didn't know that I also need an antenna and a cable (or a couple of) to connect the ...
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278 views

Laptop with two variants, identical motherboards: Graphics card addition possible?

Ok, I know a gazillion people have asked countless times about the possibility of adding a graphics card to a laptop, but this one has a twist: I got a Samsung NP300E5Z laptop recently, and the ...
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564 views

Z77 Motherboard with i7-2600K cpu, what will not work?

I'm building a new system. So far I think I narrowed it down to Gigabyte GA-Z77X-UD5H (Z77 Ivy Bridge chipset) motherboard. I was planning to get i5-3570K(Ivy Bridge) cpu, but now I can get ...
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615 views

How to Reset a mini-PCIe Card without Rebooting (Linux)

First, some context. Fed up with my old netbook stuttering with 720p videos and flash content all the time, I decided to look around for a solution. Finally I decided on CrystalHD, a video decoder ...
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Suddenly my PC stops recognizing PCIe video card

My PC specs: Intel Core i5 2400 Intel DH61WW Motherboard 4 GB RAM 500 W Gigabyte PSU XFX GeForce GTS 250 Windows 7 Ultimate Custom make, bought on July 2011 except the graphics card, which I bought ...
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13 views

4-Port Ethernet to PCIe Options

We are developing a distributed multi-channel data acquisition system. We are using 100BASE-TX for data transmission. However the data throughput requires a minimum of 4 Ethernet cables to the PC, ...
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12 views

Virtualbox, Windows 7, how do I remove “ATA Device” from msinfo32 and Device Manager?

In Virtualbox, you can change the hard drive or DVD name, manufacturer, serial, etc. (Virtualbox manual, 9.9.2.). However, the friendly name always ends with "ATA Device", after the normal formula of ...
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40 views

Dell Vostro 3550 have a PCIE or MPCIE or MXM slot?

So I was wondering if the Dell Vostro 3550 has a PCIE or MPCIE or MXM slot that I could swap out the current component using it and replace it with a gpu? I've tried looking at service manual's and ...
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19 views

SY-PEX24028 NIC is not detected by FM2A88X-ITX+ motherboard

I'm trying to use a SY-PEX24028 (PCI-E x1) card with my FM2A88X-ITX+ motherboard. I'm using my the board's only PCI-E x16 slot for the card. I have not been able to get it to detect the card either in ...
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74 views

Can the linux kernel enumerate pcie devices beyond what the bios can?

I am trying to build a large system using multiple pcie backplanes. The system bios has a limit on how many devices can be enumerated. Is it possible to force the linux kernel to manage the pcie ...
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66 views

PCI-Express Processor/Co-processor cards

I am hoping someone might be able to help: In the days when I started with computing (C64 and later Amigas) expansion slot cards with co-processing ability were relatively common. I am looking for ...
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26 views

Can i7 4770 take 2 GPUs?

I want to use 2 AMD Radeon HD5450 GPUs and a Intel i7 4770 for a multi-seat gaming setup. I have found a motherboard that has 2 PCIe x16 ports ports but I am wondering if the CPU will support it ...
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40 views

Broadcom BCM970015 Datasheet

I'm having trouble finding the datasheet for the BCM970015::image PCI Express Mini card. Can anyone help locate it? I'm interested in the physical dimensions, specifically the profile (height), ...
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77 views

Unable to find PCIe wifi card using PCIie - usb - cPCI adapter

I have a PCIe wifi card connected via a PCIe-cPCI adapter. Reading lspci output, it seems that the card is not connected at all, and I really cannot figure out where the problem is. Plus, I do not ...
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52 views

Are there any human-readable PCI slot management utilities for CentOS / Linux?

I'm looking for a method to determine, in a human-readable way, what kind of PCI device is in which slot on a computer running Linux or a derivative. lspci is somewhat cryptic and impenetrable, and ...
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Does Atto H680 HBA have a hardware buzzer?

I installed an Atto H680 PCIe HBA on OS X 10.9, and its software included an annoying menu bar icon, whose only purpose (I believe) is to turn off the card's hardware buzzer after an event. As far as ...
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42 views

Arranging PCI-e cards to maximize performance in machine

I just put a new machine together using an ASUS Republic of Gamers Rampage 4 Extreme motherboard. The machine has 2 nVidia GTX 660s, an Adaptec SAS/SATA 6G controller and a Creative Sound Blaster Z ...
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84 views

Supporting PCI-E X1 network cards by CentOS(RHEL)

Help me please I want to know it becase my windows 7 cant see my PCI-working network card and I dont want to buy a motherboard and then find that CentOS does not support PCI-E X1 network card. I want ...
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131 views

EeePC 1005HA 2nd Hard drive?

I have an old Eeepc 1005HA netbook lying around that I want to turn into a lightweight home server. As part of its server duties, I'd like it to host some NAS drives and maybe a small personal ...
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154 views

PCI Express BAR memory mapping basic understanding

I am trying to understand how PCI Express works so i can write a windows driver that can read and write to a custom PCI Express device with no on-board memory. I understand that the Base Address ...
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64 views

Does PCI-E x16 that works in x4 works can work as normal PCI-E x16?

I want to buy a motherboard. It has 2 PCI-E x16 slots. I need 2 PCI-E x16 slots to place there 2 videocards that I will use for cuda computing. When I saw motherboard's specifications I found that one ...
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109 views

New PSU won't power on with GTX780, works fine with 9600GT

A friend of mine had a PSU blow in the middle of other rotten luck, so I have him my PCP&C Silencer 910w and bought a SeaSonic SS-660XP2 (660W 80+ Platinum) as the replacement. It's a much ...
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11 views

PCI Express wiring dilemma

The following site lists the pin outs of PCI-Ex. My question is how do I know which side is Side A (and the other Side B)? Is it typically marked on a motherboard? ...
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231 views

How can I get multiple SYBA SI-PEX40057 (Marvell 88SE9230-based) SATA cards to play nice?

I've built a storage server using: Supermicro X9SCM-F motherboard Three Syba SI-PEX40057 PCIe SATA cards Ubuntu Server 12.04 LTS All twelve ports on the cards are populated with storage drives, as ...
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218 views

PCI-Express: determining Max Read Request size

Is there a way I can determine the current Max Read Request size of PCI-Express on a running Windows 7/8 system? I have googled for some time now and have tried a number of programs that display ...
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127 views

How do I get a voltage on a PCIe Parallel Port?

I'm trying to use a PCIe Parallel port from C++. (http://www.amazon.com/StarTech-com-Express-Profile-Parallel-PEX1PLP/dp/B004G7O2AC) I can't seem to change the status of any of the registeres and my ...
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363 views

pcie-x4 card is not detected in pcie-x16 slot by WinXP SP3 OS

I have H61M-ITX board with 1 x PCI Express 3.0 x16 slot (blue @ x16 mode) http://www.asrock.com/mb/Intel/H61M-ITX/ I wan to install there PCI Express x 4 card: ...
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163 views

PCI Express device does not initialize properly after extended log off

Ok, so I'm at my wit's end with this one. I work on a system which utilizes a video capture board plugged into the PCI Express bus on a Windows XP SP3 x86 machine. At one specific customer site we ...
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Gfx card issues: ASUS Nvidia GT640-2GD3

I have a similar problem to the poster in this question: New GPU power supply woes (ASUS GT640 + HP XW4600) I also have a HP XW4600 and the gfx card: ASUS Nvidia GT640-2GD3 The card doesnt seem to ...
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812 views

New GPU power supply woes (ASUS GT640 + HP XW4600)

I have a new GPU - ASUS Geforce GT640 - which doesn't require (or have connector) for separate power supply, however when plugged into a HP XW4600 the machine fails to boot - 4 beeps in a cycle. I ...
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238 views

How do I have 4GB of video memory with a 1GB video card?

I ran the direct X diagnostic tool to take a look at my graphics capabilities and it's telling me that the approximate video memory is clocked in at 4096MB. That doesn't make any sense, how is that ...
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950 views

How can I enable my integrated graphics hardware?

I wish to use three monitors, but my PCIe graphics card only has two DVI outputs. My motherboard, an ECS A880GM-M6 Black Series, has onboard graphics, but it seems to be disabled when the PCIe card is ...
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544 views

Using both integrated graphic card and a PCIe GPU

How do I know whether it's possible to use both integrated graphic card and a PCIe one on a Gigabyte G33-DS3R motherboard? I saw some other question whose some answers tends to suggest it's not ...
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Will a mini pci-e installed gpu override an over heated faulty onboard gpu during post/ boot up(dell Inspiron n5010 i5 laptop)

I have a dell Inspiron n5010 i5 2010 model laptop with onboard faulty/ over heated ATI radon 5000 series gpu. it can't pass post, nothing on screen or external hdmi display, fan sound present. ...