Hacking Nvidia's Drivers!

[AnusSexTips]

And why is then PCI-e 3.0 on TPU?
 

I guess they would have already corrected it if it was wrong.

[Snowarch]

a p106 at 1.0? that makes no sense. mine is running at x16/3.0, even nvdia driver says so. try another pcie slot, or check your cpu's lanes?@AnusSexTips

[Snowarch]

a p106 at 1.0? that makes no sense. mine is running at x16, even nvdia driver says so.

try another pcie slot, or check your cpu's lanes?@AnusSexTips

 

also i have 2 6gb p106-100's in my system. i play mostly single player, so anyone know how i'd sli these with no bridge? exact same card except one is passively cooled, other is fan.

[AnusSexTips]

2 hours ago, Snowarch said:

check your cpu's lanes?

What do you mean? The CPU is a i5-8500

[Snowarch]

just looked your cpu has 16 pcie lanes like mine. do you have a network card or similar in a pcie slot? if you do, it may be eating pcie slots, assuming windows os, it could be a windows not liking the card issue

the part about expansion slots is what i meant. try another pcie slot if you have one. my motherboard has 3 pcie slots, and i use one closest to the cpu cooler 

https://en.wikichip.org/wiki/intel/core_i5/i5-8500

[Snowarch]

@AnusSexTips

[Shibly]

3 hours ago, Snowarch said:

a p106 at 1.0? that makes no sense. mine is running at x16/3.0, even nvdia driver says so. try another pcie slot, or check your cpu's lanes?@AnusSexTips

Boy OH Boy! Thats the problem with this card. Nvidia made this specifically work at that bus speed no matter the slot is gen 2 or gen 3. Gpu-zshows the correct info, disregard others. It maybe connected to gen3 port but No where on earth it is allowed by nvidia to use full bus speed. and then there is p104 that works at X4.

[Snowarch]

but you saw mine, p106 is at x16. unless you mean p104/102 those are fixed to not work right.

[Shibly]

6 minutes ago, Snowarch said:

but you saw mine, p106 is at x16. unless you mean p104/102 those are fixed to not work right.

All these cards are crippled by nvidia, they show up at where you connected just like it should, but it does not work just like it should. I even tried to use nvenc, system does not even recognize the card having that. so yeah its connected like that but IRL does not work like that. I tried This card in my EXP gdc, and damn this gen1.1 hurts. I could not get over 20 FPS on anything.

[Snowarch]

on linux, i get 100+ fps on 4k csgo, and 4k maxed bsl minecraft shaders give me 60fps, 130-150 gta dx10 on low. @Shibly

[Snowarch]

*30 fps on bsl maxed minecraft shaders 4k.

[Snowarch]

so i think something is seriously crippled with windows version drivers of the card only.

[Snowarch]

i do not have a p102 or 104 to try only a 6 i've used.

[Shibly]

3 minutes ago, Snowarch said:

on linux, i get 100+ fps on 4k csgo, and 4k maxed bsl minecraft shaders give me 60fps, 130-150 gta dx10 on low. @Shibly

Thats cause you are on X16 interface. Exp gdc works on 1X interface and you will get very bad numbers that doesnot match if it was gen 3. even my gtx 960 performed better. Also It might be windows drivers as I never tried linux and exp gdc on my laptop. but anyways in case of desktop usage the bandwidth never caused me any problems. Its fine for 1080p even with that crappy connection.

[Snowarch]

im confused. are you saying that a 970 would beat my frames? 

[Shibly]

1 minute ago, Snowarch said:

im confused. are you saying that a 970 would beat my frames? 

nah, What i am saying is that with the frames this card should push, It cant. on desktop it fares way better than my gtx 960. but it does suffer when both are slotted in 1x slot and that was my eye opener that this card doesnt work in gen3 speeds.

[Snowarch]

oh so if not main card it is not as good as should be. 

[Snowarch]

any idea how to make the nvdia driver see my second p106?

[AnusSexTips]

Mine runs on x16 but only 1.1, and thats my problem. It performs on the level of a GTX 970, so there is a -10% in it's performance.

There aren't any onther cards using PCI-e, so I think the performance drawback is dues to the 1.1

 

So there is no way it can be made to run using gen3?

[Snowarch]

linux if youre lucky. 

[Snowarch]

have 2 p106's did an os reinstall and it wont even boot with my 2nd card. i think it needs to be ddu'd.

[Shibly]

4 hours ago, Snowarch said:

linux if youre lucky. 

 

6 hours ago, AnusSexTips said:

Mine runs on x16 but only 1.1, and thats my problem. It performs on the level of a GTX 970, so there is a -10% in it's performance.

There aren't any onther cards using PCI-e, so I think the performance drawback is dues to the 1.1

 

So there is no way it can be made to run using gen3?

Nothing will help, that limitation is hard coded to the hardware as far as our findings went. Nvidia made sure that this cannot go to mainstream gamers, and even if it does it will under-perform.

[zereshk]

23 hours ago, AnusSexTips said:

And why is then PCI-e 3.0 on TPU?
 

I guess they would have already corrected it if it was wrong.

ok, i'm not sure if anyone els mentioned this, but every new card that came over the last 6-5 years, are PCIE 3.0!!! at least and now we're talking about PCIe 4.0 with new cards.

when u check it with something like gpuz, it's always on power saving mod, so the card is not always at it full speed and not using the power.

u can make the card show it's real potential by clicking on the question mark beside the information about PCIe, to do some rendering and start using the card, then u'll see the card working at x16 PCIe version 3.0 if your mobo support it.

[dartraiden]

P106-100 and similar cards are locked at 1.1 bus speed by Nvidia. See "Card Bus" specification at

https://www.gigabyte.com/Graphics-Card/GV-NP106D5-6G-rev-10/sp#sp

 

This is the Nvidia's decision, it has nothing to do with the real capabilities of the chip.

 

P106 uses PCI-E 1.1 even at full load.  Even with the x16 slot, you will lose about 10% of the performance compared to 1066 (x16 3.0). My tests confirm this. The GPU performance is limited by x16 1.1 = x8 2.0 = x4 3.0.

 

Compare 1066 performance in x8 3.0 slot with P106 performance in x8 3.0 slot. While the performance of 1066 does not decrease, the p106 will in reality work in 1.1 x8 mode, which is dramatically low and will lead to a noticeable decrease in performance.

 

Perhaps this way Nvidia utilizes defective chips whose controller is not able to work in PCI-E 3.0 mode. The main job in mining is to calculate a hash whose transfer to the CPU does not require large bandwidth.

 

Same story was with the Skylake ES processors (A0 stepping). Their builtin PCI-E controller could not work in 3.0 mode, while for retail samples (R0) it worked in 3.0 mode.

 

[Snowarch]

just a heads up, linux or windows some of these cards are fixed to not work at all. it may be passively cooled cards spasifically on linux, but both are p106-100's and when the passively cooled one is in primary slot i cant even boot to login, when the fan one is i can do that and play games. the passively cooled one in second slot will be detected by os, but will say "access denied" on capabilities when viewed with "pcils" command