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  #11  
Old 17-01-18, 02:25 PM
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Quote:
Originally Posted by stevehat1 View Post
So a little OT... But didn't want to start a whole new thread
Steve, are the rigs with the 1080's in running Windows or Linux?

Reason i ask is my new 1080 is slightly disappointing to be honest, i was at least expecting 150-200k ppd more on every WU vs my 1070 but sadly its more like 100k.

The rig in question is an old X6 1055t (stock, so i'm losing ppd here vs a high clocked cpu) on windows 7, most ive seen so far is just over 800k on a 11432 vs my 1070 which did 650-675k in the same rig.

I know i'm also losing PPD due to it only being PCIE16 2.0 but only getting around 540k on a 9415 on a 1080 seems like a slap in the face.

Granted the card isn't overclocked, boosts to around 1880mhz on the core (same as my 1070) but i was still hoping for more ppd, granted i can OC but i don't want to have to baby sit anymore than i already do

Now my plan is to try Linux on said rig to see if what they say about Linux is true

Quick Update: Looking at the PPD on my 1070 now that its in my stock i5 2500 it's pulling 100k more on each WU vs what it did in the old X6

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  #12  
Old 24-01-18, 03:27 AM
stevehat1 stevehat1 is offline
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Both cards boosted to around 1950ish at default for [email protected]
Both 1080s are on Haswells at about 4.5 G one two core and the other a four core.
CPU speed does make a difference. Both cards are also at PCIe x 16 3.0 also which makes a difference. They run around 2100 boost clock, seems to be the sweet spot without stupid VDDC. I'm running a small VDDC boost of maybe .01 above boost voltage.
To answer the first question, they are on Win 10 64.
My older GTX 970 was good for 365-400+ PPD on the Haswells but on an older board and no PCIe x16 3.0 its only doing 220K or so PPD. So CPU speed and PCIe speed do matter quite a bit.
Some of the 1143X WUs hit over 1,000,000 K PPD on the 1080s at said settings. Think your quick update answers most of your questions
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  #13  
Old 24-01-18, 09:22 AM
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Cheers for the info Steve.
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  #14  
Old 24-01-18, 03:39 PM
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Wow, I'm surprised at how big of an impact CPU speed plays in PPD of GPU.
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