Question, concern PCIe 4.0 / PCIe 3.0

[AlwaysHope]

All i use are workstation gpus for gaming, editing, videos, everything, but mainly gaming. I had to recently clean my w5500, because it kept going up to 99 temps when gaming on demanding games or any game for that matter, bought some paste and not it never goes above 75c-80c. (card was dirty as hell, common sense to clean it) But thanks Guess i will find out soon enough.

Got it, so you want a mix of everything. That's ok, each PC fits its user model. But you have to keep in mind power spikes that modern GPUs bring to the table these days & allow for that when planning a machine that is going to be gaming as one task from other uses.

 

[Waldorf]

@The red spirit

sorry, but not what i would say is proper way (in an enthusiast forum like tpu) to recommend/how to buy a psu.

i had a 750w and a 850w platinum that were causing my 2080S to show "insufficient power" delivery on one 8 pin (pcb leds), no matter which port i used (psu).
only when looking into it, did i realize that it was the psu, because of transient loads,
and the 750w rmx i swapped it for, has zero issues, even when stressed/full load on whole rig.

so while looking at amps/volts is a good start, with the psu being the most important part of a system, output shouldn't be the main ficus.

 

[The red spirit]

@The red spirit

sorry, but not what i would say is proper way (in an enthusiast forum like tpu) to recommend/how to buy a psu.

OP was asking about their own already purchased PSU. It doesn't seem like OP were experienced in computers, so I gave an appropriate advice. I just now realized that it's Dell power supply in prebuilt and it's their workstation computer at that. It's most likely a decent unit. Shouldn't be problematic.

 

[Waldorf]

just worried about others coming across this and think that's all they need to look for, especially after i experienced the transient issue, most reviews don't even look at.

 

[Mussels]

The transient issue is a new and fun problem

I ran my 750W corsair for well over 5 years problem free, but as its aged it started to squeal like a piggy if my 3090 wasn't underclocked - new PSU with only 100W more on the label, zero issues even with an overclock

Unless you're running a top tier GPU, you can often get away with a low wattage PSU - as long as its from a quality OEM. Transients for example come down to the OCP safety not getting triggered (no split 18A 12V rails) and big enough primary capacitors to not drain out instantly if the load spikes

@Fry178 considering my 3090 doesnt even have that issues on 2x8 pin, i'd say something was up with your GPU in particular, or possibly wiring (PSU extensions, pigtail connectors, bad luck with both PSU's you tested being crap, etc)

 

[RadeonProVega]

I bet this problem is solved as soon as you upgrade your platform to one with PCIE 4.0 support.

Question, i came across 11th gen desktops

Compared to my Intel 2678 v3, wouldn't it be slower despite the i5-14400 being newer?

 

[Mussels]

Question, i came across 11th gen desktops

Compared to my Intel 2678 v3, wouldn't it be slower despite the i5-14400 being newer?

Slower at what?

It's a 2.5GHz-3.1GHz 12 core vs a 2.6GHz-4.4GHz 6 core

The 11th gen is going to be heaps faster single threaded with better PCI-E speeds and memory speeds, but it's going to be absolutely destroyed at multi threaded tasks like cinebench

If this is about that weird GPU you've got with the reduced PCI-E lanes, it'll obviously be faster - anything with PCI-E 4.0 will help that GPU out

 

[RadeonProVega]

Slower at what?

It's a 2.5GHz-3.1GHz 12 core vs a 2.6GHz-4.4GHz 6 core

The 11th gen is going to be heaps faster single threaded with better PCI-E speeds and memory speeds, but it's going to be absolutely destroyed at multi threaded tasks like cinebench

If this is about that weird GPU you've got with the reduced PCI-E lanes, it'll obviously be faster - anything with PCI-E 4.0 will help that GPU out

Thanks for the info about which one is faster, i did some research as well. But as for the weird power level /fps issue, i don't have that issue with my wx 7100 which is x16. I believe its just a problem with my w5500 because of it being x8. I'm sure once i get the w6600 or w5700 both being x16 i won't have that problem as well. I'm just not buying anymore cards that has x8, that's all.

 

[Mussels]

Thanks for the info about which one is faster, i did some research as well. But as for the weird power level /fps issue, i don't have that issue with my wx 7100 which is x16. I believe its just a problem with my w5500 because of it being x8. I'm sure once i get the w6600 or w5700 both being x16 i won't have that problem as well. I'm just not buying anymore cards that has x8, that's all.

Anything with PCI-E 4.0 will work faster on the weird 8x and 4x cards, because it doubles their available bandwidth
On AMD the cheapest there is B550/x570 with 3000 or 5000 series CPU's (5000 series is a far better choice)
On intel it's 11th gen and up

Both brands have some limitations with what slots actually get 4.0!

X570 has all slots 4.0, even the 1x slots
B550 you'll only get one NVME and the first GPU slot at 4.0 - all others are 3.0

Intel has more of a mess
Like AMD, you can use an older CPU and be locked to 3.0
But then the amount of chipset lanes and PCI-E gen gets messier

You can have the first GPU slot and one NVME at 4.0 - using your second and or third PCI-E slots on these boards will drop (or certain NVME slots) will drop to an 8x/8x/4x 8x/4x/4x/4x setup instead
This could cause you issues depending on how you set the GPU's up, so research the specific chipsets and boards you're looking into. No fun in slapping a 4x card into a 4x slot, to find it stole 8 lanes from a device that needed it.


The rest comes down to what you're using the cards for - although if you still keep the 2678 v3 system around, there's nothing stopping you running CPU bound rendering tasks on it, while running everything else on the modern PC.