What are the difference between the pci express x16 generations

every thing looks fine its just the small slant on the card like only one bit of the gold slot of the gpu appears out of the pci express x16 slot. so are you saying that the 3rd photo is normal like there is a slant on to the motherboard away from the case ?

I couldn't see the pictures, so I had to go based on reactions. Are you telling me his card isn't fully seated into its slot?

How the HELL does THATY work? I wouldn't just 'close up the case and have fun'. Seems couter-intuitive and HIGHLY unlikely that that's going to fly for any period of time...sitting partially seated. Goes against everything I was taught and everything I have experienced anyway. Whatever...wouldn't be the first or even the millionth time I was wrong.

I am STILL not detecting a nice, straight-up-undigested-nonboased asnwer for which standard (PCIe or PCIe 3.0 X 16 is 'better'. There are HUGE price differences in the MSI and XFX R9 390 cards with these two different specs and I cannot figure out why.

Also, I am finding out most others do not know either. Oh they 'answer' the questions..but it's like listening to a politician answer a question...everyone is dancing around the black and white of it for some unknown reasons.

Last complaint. I understand that English is not a first language for most folks, but so many things are being said in here where the syntax and context (lack thereof) makes the message completely unintelligible. The SPELLING is usually fine but the way the words are arranged and their intended message is often completely lost on me. I am trying to help, and this is in NO WAY INTENDED as a knock or slight against any race, creed, color, sexual orientation, lack of jedi power, having brown eyes or green and so on...don't make it out to be, PC Police.

...as I was saying if I read something, but I cannot comprehend what's being asked, I cannot help. Slow down and take your time on your questions and responses.

A card can be slightly "slanted" and still function fine. The PCIe contacts are close to centimeter long so as long as they make good contact with the slot counterpart contacts, it doesn't matter that much if they are not fully pushed at the bottom. I've had graphics card on two machines like that, I couldn't manage to install them perfectly straight, and gave it up since what works, works.


You ask what is better, PCIe 2.0 or PCIe 3.0. Yes this was not perfectly explained but it's fairly common question and you can find an explonation for it in many places. OP didn't really care about that, he only cared about if his new card works.

PCIe 1.0 was first generation of PCI Express. It was not originally referred as such, it was just referred PCIe. After that came second generation 2.0 and then third generation 3.0. And then there were intermediate generatios too like 3.1 , but they are hardly referred to.

Bottom line, they are all compatible with each other. Newer generations are just faster. They will function at speed which is lower, if motherboard and card don't support same generation.


A common question is, "I have PCIe 1.0 16X motherboard, if I buy PCIe 3.0 16X graphics card, will it hurt performance". The answer usually is, not much. Little, but only little. However any motherboard with 1.0 generation PCIe will not support fast enough CPUs to actually benefit from highend PCI 3.0 card. It would not be a good combination. Roughtly same applies for PCIe 2.0 gen motherboards too.



As for R9 390 cards, each graphics card is made only for current generation, which currently is 3.0 . Some R9 390 models may be better versions for example they may have better non-reference cooler. Such would obviously be more expensive.

But, a price alone doesn't mean anything. Surely you understand retailers have a huge lists of things they sell, but some of the stuff and prices might be old. Some might even be leftovers for something that's not actually available anymore. but they might still be listed because they can't keep track of everything. You can link particular models and we could tell if they have actually any differences.

R9 390 has gone out of production so whatever is left, is sold. I checked one local large retailer, they have R9 390 and R9 390X both from MSI. They don't have any other anymore. The R9 390X is faster model, yet it was 100 euros cheaper. 300 euros vs. 400 euros. For both they have just two units in the shelves in store, which can't be brought online, only from store. So 100 euros more, from the slower card, is very unreasonable. It simply is so, that a large retailer like them, can't keep all the prices "current", specially for products which are going out of stock with no new stock being available from supplier as they have been replaced by newer models. So it's buyers responsibility to compare prices.