Question Why is my RX 6600 running at x4 8 GT/s on PCIe 3.0 ?

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Power down the PC and remove the GPU. Check the PCIe connector and the slot and make sure everything looks okay, then (if it does) try reseating the card carefully, making sure it's fully inserted into the slot.

If that doesn't work, you could try cleaning the PCIe connector and the slot, if you have access to IPA or electrical cleaner and compressed air and you know what you're doing. If you don't, post back here for advice.

If the contacts and/or slot look wrong (like anything broken, or corrosion on the contacts, or something inside the slot) take close-up photos and post back here.
 
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Moonstick2 said:
Power down the PC and remove the GPU. Check the PCIe connector and the slot and make sure everything looks okay, then (if it does) try reseating the card carefully, making sure it's fully inserted into the slot.

If that doesn't work, you could try cleaning the PCIe connector and the slot, if you have access to IPA or electrical cleaner and compressed air and you know what you're doing. If you don't, post back here for advice.

If the contacts and/or slot look wrong (like anything broken, or corrosion on the contacts, or something inside the slot) take close-up photos and post back here.
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alr cleaned my pc 2 weeks ago and im sure its fully inserted into the slot and if i need to remove my GPU i have to remove case fan and HDD and its pain on this small case so i will keep what u said in mind when i clean my pc again
i dont know if its old problem or new i was showing my GPU-Z pic to someone and they notice the x4 thing
i did try to change PCie lanes on bios settings from x16 to x8x8 and my pc boot but no signal on my monitor
 
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If the current performance isn't bothering you then that's fine. To explain further, the card is 4.0 x8 meaning "version" 4.0, 8 PCIe lanes. Your board offers version 3.0, x16 which is 16 PCIe lanes. Your card can run at 3.0 but can't add any more lanes so the fastest your card can run in your board is 3.0 x8 which is half the bandwidth its capable of. At 3.0 x4 it's running at half that again.

Most of the time loss of lanes is down to poor contacts, whether that's the card either not being seated correctly or the contacts on the card/slot being dirty.
 
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Moonstick2 said:
If the current performance isn't bothering you then that's fine. To explain further, the card is 4.0 x8 meaning "version" 4.0, 8 PCIe lanes. Your board offers version 3.0, x16 which is 16 PCIe lanes. Your card can run at 3.0 but can't add any more lanes so the fastest your card can run in your board is 3.0 x8 which is half the bandwidth its capable of. At 3.0 x4 it's running at half that again.

Most of the time loss of lanes is down to poor contacts, whether that's the card either not being seated correctly or the contacts on the card/slot being dirty.
Click to expand...
i cleaned my pc two weeks ago with brush and blower so it may be my GPU not being seated correctly so i will try with it this sunday if i got time
side note : i always clean my pc and it work fin but last time i cleaned didnt boot only cpu/case fans running i cleared cmos and tryed with one ram many times and somehow it boot
 
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boju said:
When it's time to clean a PC never pull parts out... Just blow the dust out with compressor or can of compressed air. Dust will not get into contacts where components are already seated.
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i always clean my pc without a problem
i'm afraid i have to pull parts out with this small case i can keep ram but i cant do that with GPU
 
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131rg45w412 said:
i always clean my pc without a problem
i'm afraid i have to pull parts out with this small case i can keep ram but i cant do that with GPU
Click to expand...

131rg45w412 said:
but last time i cleaned didnt boot only cpu/case fans running i cleared cmos and tryed with one ram many times and somehow it boot
Click to expand...

The more you unnecessarily remove things the higher chance of failure. I get you want things looking nice but can also go too far. Some people do regular cleaning and get caught out. Me; blow it out once a year. Though i don't look inside the case all that often, but when i do it ain't so bad, there is dust but not excessive. Its the thermals i look at regularly though. If they fine, i don't need to do anything yet, and during 30odd years of computers, needing to clean because of performance issues has been zilch. Cleaning exacerbates issues in quite the few cases I've seen here, all of a sudden lit cpu or dram leds, then find out there had been cleaning involved.

If you must OTT clean and blowing air isn't enough, which let's be honest, air does a good job anyway, do what you can just reframe from pulling things apart too much.
 
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boju said:
The more you unnecessarily remove things the higher chance of failure. I get you want things looking nice but can also go too far. Some people do regular cleaning and get caught out. Me; blow it out once a year. Though i don't look inside the case all that often, but when i do it ain't so bad, there is dust but not excessive. Its the thermals i look at regularly though. If they fine, i don't need to do anything yet, and during 30odd years of computers, needing to clean because of performance issues has been zilch. Cleaning exacerbates issues in quite the few cases I've seen here, all of a sudden lit cpu or dram leds, then find out there had been cleaning involved.

If you must OTT clean and blowing air isn't enough, which let's be honest, air does a good job anyway, do what you can just reframe from pulling things apart too much.
Click to expand...
i get you that was my mine problem with my old PC from 2010 to 2020 everytime i clean it i have to suffer and sometimes i have to hit it to work
now im cleaning my new pc like 3 or 2 times per year and its been like 3 years without a problem maybe the brush that came with my keybord caused that
yeah if i just have a good case that will save time just a 5min of air blower and u r done
 
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ohio_buckeye said:
If I recall the 6600xt ran at x8 lanes and not x16. Probably the same for the 6600 I'd guess. I know there was a little performance loss, but I think for most games it was just a couple of % points if any.
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yeah but if im not wrong rx 6600 ran at x8 lanes on pcie 3 not at x4 lanes
i saw GPU-Z pics of RX 6600 ran at x8 with 8 GT/s but mine ran at x4 with 8 GT/s
 
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Moonstick2 said:
If the current performance isn't bothering you then that's fine. To explain further, the card is 4.0 x8 meaning "version" 4.0, 8 PCIe lanes. Your board offers version 3.0, x16 which is 16 PCIe lanes. Your card can run at 3.0 but can't add any more lanes so the fastest your card can run in your board is 3.0 x8 which is half the bandwidth its capable of. At 3.0 x4 it's running at half that again.

Most of the time loss of lanes is down to poor contacts, whether that's the card either not being seated correctly or the contacts on the card/slot being dirty.
Click to expand...
i think its some kind of bug even if it shows me x4 my benchmark is close to someone with pcie 4 unless they have the same bug
My benchmark and PCIE 4 benchmark
my GPU settings was with Auto undervolt 1125mv
 
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131rg45w412 said:
i think its some kind of bug even if it shows me x4 my benchmark is close to someone with pcie 4 unless they have the same bug
My benchmark and PCIE 4 benchmark
my GPU settings was with Auto undervolt 1125mv
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thats not real benchmark

fillrate (multitexuring) test would show you your pcie bandwith limitations

gpu bandwith wasnt an issue for really long time now, so any modern gpu benchmarks skips this kind of test, but you can run older 3dmark06 which still has it
benchmarks.ul.com

Futuremark Legacy Benchmarks

Download legacy versions of 3DMark, PCMark, and other Futuremark benchmarks for free.
benchmarks.ul.com benchmarks.ul.com
 
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131rg45w412 said:
can you suggest something that shows other users benchmarks too?
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store.steampowered.com

3DMark on Steam

3DMark is for gamers, overclockers and system builders who want to get more out of their hardware. With its wide range of benchmark tests, 3DMark has everything you need to test your PC or Mac's performance.
store.steampowered.com store.steampowered.com
there is free demo on it, after benchmark, it would show you web comparison with other similar systems as yours
 
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kerberos_20 said:
store.steampowered.com

3DMark on Steam

3DMark is for gamers, overclockers and system builders who want to get more out of their hardware. With its wide range of benchmark tests, 3DMark has everything you need to test your PC or Mac's performance.
store.steampowered.com store.steampowered.com
there is free demo on it, after benchmark, it would show you web comparison with other similar systems as yours
Click to expand...
here is what i got with Auto undervolt settings
 
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