Hey /g/uys. I heard that PCI 3.0-oriented hardware can work (reverse

>>55954277
Not really. I used a PCI-E 3.0 card (GTX 980) at PCI-E 1.1 speeds.

>>55954300
How?

>>55954277
for most consumer tasks there isn't a difference. pcie 3 is technically faster than 2 but 2 is so fast anyway that you won't notice any difference

>>55954393
the slots are the same

>>55954421
True. Because most cheap mobos i see have 2.0 but also the cheap gpu cards use 3.0 lol

>>55954431
Oh shiy I misread that lol. I was thinking pcie x1 instead of pcie 1.1 x16. Whoops.

>>55954277
>Hey /g/uys. I heard that PCI 3.0-oriented hardware can work (reverse compatible) in PCI 2.0 slots. Is this true?
Yes.
>Also is their any disadvantages or limitations to putting a pci 3.0 card in a 2.0 slot?
Technically, yes. But these disadvantages and limitations don't apply to any consumer hardware that you care about, as even a modern high-end GPU won't saturate the full bandwidth of a PCI-e 2.0 x16 slot. The difference in bandwidth only really becomes apparent in HPC hardware.

ive got a 750ti in a 2.0 slot, not much of a performance problem when its only being used on sub 1080p anyway

>>55954482
>he thinks the PCI-e bus gives a shit about resolution
Spoiler alert: It doesn't. Your GPU pulls the same amount of bandwidth whether it's running shit at 640x480 or 8k resolution.
Another spoiler alert: You won't get more frames per second by putting your 750 Ti in a 3.0 x16 slot.

>>55954466
Oh. Thanks.
>>55954482
Oh thanks.

I might have to use a shitty onboard graphics card that comes with a gpu i might get, but apparently it has a fixed memory usage of 512mb.. Is their any cpus that have any more than that, and if there are, are there any where you can change how much memory it can use?

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Is Gentoo PCI 2.0 compatible?

>>55954461
I feel like there's a picture floating around out there where someone cut/sawed off the extra pins of their GPU to fit it in a 1x slot.

>>55954616
Lol really? Seems kinda extreme.

Modern GPUs still do not use enough bandwidth to max out a PCIE 16x 2.0. Much less 3.0. You are safe OP.

>>55954461

Technically you can do that. They make adapters for that. They also make PCIe 1x GPUs. And I've seen people either cut the pins off their GPU or cut the edge of the PCIe 1X slot to make the GPU fit.

Coin miners do stupid shit.

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>>55954616

>>55954685
How would this not break the card?

Depending on what you're going to do with the pcie slot it might become a huge limitation.
Example for a fileserver:
>Raid controller with 16x 12gbps sas ports = 192 gbps
>Usually 8 lanes
>PCIE 3.0 x8 ~ 64 gbps
>PCIE 2.0 x8 ~ 32 gbps

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>>55954766

Electrically, it works. The pins on the left are the most important. The rest are just used for the higher speeds. You can test it by putting tape on the pin edge to force the card to run at different speeds.

>>55954766
https://en.wikipedia.org/wiki/PCI_Express#Pinout
He basically cut off all lanes but lane 0 and the other necessary pins. On serverboards you often have 16x mechanical lanes but only 8x electrically connected.

>>55954766
The standard is actually designed to allow this.

>>55954929
Interesting. But what's the point of doing it if it slows down ur card?

>>55954969
It's cheaper for manufacturer to have just one type of slot.
On servers you need a gpu for the intial setup, after that you could use ssh, rdp or vnc or whatever you want. With 16 electrical lanes 8 lanes would be wasted as most add on cards are for physical and electrical pcie x8 slots.

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>>55954766

it just werks

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>>55954277
bobbleneck :-DDD

>>55954581
Are you PCI-E compatible?