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1 hour ago, AluminumHaste said:

So I did something a bit nuts last night.

I've been wanting to replay some old games that heavily used PhysX, but they run like crap on my AMD Radeon system.
Games like Mirror's Edge 1, Batman series, Metro Exodus, Boderlands 2 etc.

I had a spare EVGA 980ti sitting on the shelf, so took the computer apart and added it to my system.

After playing around with PCIe lane splitting, I was able to get 8x Gen4 to the 7900XTX, 4x Gen 3 to the 980ti.

Also, using the DirectX to Vulkan wrapper for Mirror's Edge, I was playing the game at 1440p, 360 fps, with PhysX on and it just worked.

I did have to do some fiddling with software though, installed JUST the graphics driver from 2021, no control panel, and latest PhysX software. Of course you have to fiddle with each game to get it to use the latest physx binaries instead of the included ancient ones, but once I got it working, Batman Arkham City benchmark was running at an average 240 fps with Max of 360 fps with PhysX on.

 

 

Oh I never realized that was possible now, I recall Nvidia not letting AMD users use a Nvidia GPU has a PhysX accelerator!? 

And btw I don't think the extra PhysX effects are worth it for the extra heat and energy consumption of having two GPU's on a system. 

And I say this has someone that (unfortunately) bought a Ageia PPU and played the hell out of CellFactor and Warmonger, specially this last one. 

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Well even at full PhysX rendering the Nvidia GPU is using about 40 watts. Compared to the output of the 14700k and 7900XTX at 360 FPS output, it's not even noticeable.

I always assumed I'd taste like boot leather.

 

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yeah at some point several years ago they gimped the physx driver so it could only run with GPU acceleration if no amd card was detected, as expected they got quite a boatload of flak for that move but it persisted for some generations of the physx driver before they removed it again.

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can be a fun project (or drive you to madness) :) it can be fiddly to get the cards to work together i can attest to that having used an old nvidia card as an accelerator for my no longer used amd R9 290X. when it works it works beautifully but it does not really make sense for games that dont use physx.

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Was working on my mother's PC this weekend.

AMD E-300 APU with HD 6310 graphics.

Doing everything I could from the performance tweak guide, I got about 18FPS in "A New Job" ( at most ).

Wasn't expecting miracles, the thing barely runs Doom 3. Just morbid curiosity.

 

I've been pondering setting up a Linux partition on it.

Modern ( updated ) Windows 10 is atrocious with a spinning HDD so it might be nice to have something a little snappier to do browsing (etc).

Downside is that Windows 10 tends to funk up dual boot systems when the OS's exist on the same HDD.

I don't think my mom is gonna want to learn to use a USB boot repair and cross fingers every time she updates.

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Please visit TDM's IndieDB site and help promote the mod:

 

http://www.indiedb.com/mods/the-dark-mod

 

(Yeah, shameless promotion... but traffic is traffic folks...)

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Ok so I think I might have found the reason for the performance delta between my wife's computer and mine. While working on getting the Nvidia card working, I manually set the 1st PCIe slot to x16 Gen4, whereas it was at 4x Gen3 before.

HWinfo confirms this:

(PCIe v4.0 x16 (16.0 GT/s) @ x16 (16.0 GT/s))

Now in Scroll of Remembrance at the start, I get 140 fps. Must have been bandwidth starved at 4x Gen3 PCIe.

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I always assumed I'd taste like boot leather.

 

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yeah even win7 was starting to have problems speedwise with a mecha monster (mechanical harddrive) x), one huge improvement would be smacking a cheap ssd in it and use the old bookweight as a backup drive :) but since it's a laptop the books need to be light hehe.

the E300 is a bobcat series so not exactly fast pr core and it's age "released 2011" means its threading in hazarddous territory even on win7/8 but can it run 10 ? sure ;) will it be fast eh ? nope...

some more ram might also help a bit since win10 runs best with atleast 8gb.

 

1 hour ago, AluminumHaste said:

Ok so I think I might have found the reason for the performance delta between my wife's computer and mine. While working on getting the Nvidia card working, I manually set the 1st PCIe slot to x16 Gen4, whereas it was at 4x Gen3 before.

HWinfo confirms this:

(PCIe v4.0 x16 (16.0 GT/s) @ x16 (16.0 GT/s))

Now in Scroll of Remembrance at the start, I get 140 fps. Must have been bandwidth starved at 4x Gen3 PCIe.

sounds likely, if your gfx card is pcie 4.0 though some pcie 4.0 cards actually run better in pcie 3.0 heh.

 

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doh i remember now i actually had an E300 laptop myself at some point 😂 mine was from asus and came with win7 32 bit though it could actually run the 64 bit version as well but it was damn slow even with the 32 bit version. so yah i allready went through upgrading it and i remember now that even with an ssd it was a slow starter (not that weird tbh the cpu was ment for the mobile market that it could actually run win7 was pretty fantastic).

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also you have to be carefull when adding new cards as the pcie slot allocation is determined by the cpu, i found that out the hard way back when the x99-AII was running with the original 6800k. the 6800k only has 28 pcie lanes and wifi steals 4 of those and the extra usb3 slots steals 2 more lanes plus the nvme also runs away with 4 lanes the gfx card muzzles in and gobbles up 16 so when i added a thunderbolt card that came with the board i suddenly noticied my gfx card was running at x8 instead of x16 🤣 because the thunderbolt card also took 4 lanes. with the 6950x i have 40 lanes so plenty of room for everything as long as i dont go sli in which case id be back to square one with atleast one of them running at x8.

some boards use a special chip for multiplying pcie lanes but it does take a toll on performance so i havent seen many of those lately.

still with the 6800k i had to either disable the extra usb3 ports or the onboard wifi if i wanted an nvme and i dont normally use a ton of usb3 ports but dragging a cable for my internet into my room ment 20m of cable so i opted for the wifi so instead the extra usb3 ports were turned off.

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  • 2 weeks later...

one weird thing i noticed with the x99 was that the gfx port downscaled to 16_1 when not running something that required the muscle as soon as i started a game it went up to 16_3 (verified with gpu-z), my older x79 allways ran in 16_3 even though it did not need to so it seems there were some changes in the pcie handling on later cpu's.

when the intel x299 came out the pcie lanes went up a bit 48 i think it is now, not sure if amd also upped theres ?.

 

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