Minor Mystery with two Fold at Home systems.

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romanvalkre

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Aug 20, 2014
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Hi all, first post at Tom’s. I have two systems folding away, the “better” system is outputting less PPD average? I am hoping someone can think of a reason cus I am stumped!

First system:
I7 4790K pegged at 4.4 GHz, running on a Asus Z87 Pro, with a HIS 7850 OC’ed to 1 GHz
Second system:
I7 4770K Consistently running 3.7 via Turbo Boost, on a MSI Z97 PC Mate, with a MSI 7850 twin frozr running 900MHz.

The 4770K system is 5-8K point in the lead and it should not be?

PS… the Devil Cannon on a Z87, with the original Haswell on a Z97 is a long story that includes the failure of another Z87 Pro, and an emergency trip to Microcenter… I now have a G3258 sitting on a shelf.
 
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Yeah, if windows 7 home is limited to 8GB, that would explain most of it. As you said, probably the overall combination, although the z87 board is better than the z97 board in this case. I don't think there's compability issues and benchmarks show the z87 pro close to the z97 pro.
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romanvalkre

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Aug 20, 2014
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First System:
Host Name: Grendel _4
CPU: Intel i7 4790K running at 4.4 GHz
MOBO: Asus Z87 Pro
GPU: HIS 7850
RAM: 16GB at 1600Mhz, Crucial Ballistix Tactical (2x8)
PSU: Kingwin Power Force 850 Watt
Sound card: NA
NIC: Intel I217v
System Drive: 120GB SSD I think its an OCZ agility 3
Storage Drives: 2x 2TB, don’t remember what brand name/s
OS: Win 7 Home
BIOS : Version 1707 I think

Second System:
Host Name: Osiris 1
CPU: Intel i7 4770K running at 3.9 GHz
MOBO: MSI Z97 PC MATE
GPU: HIS 7850
RAM: 16GB at 1600Mhz, Crucial Ballistix Tactical (2x8)
PSU: XFX Pro Series 850 Watt
Sound card: NA
NIC: Realtek 8111E
System Drive: 120GB SSD I think its an OCZ agility 3
Storage Drives: 2x 2TB, don’t remember what brand name/s
OS: Win 7 Ultimate
BIOS : Don’t know


I hope that was what you’re looking for... I did find that system 1 was running an older graphics driver; however, I updated that on 9/19/14, and it has not made any difference. You may notice some slight differences in the second systems clock speed... the 3.9 is the accurate number. The heart of my question is can the different chipset be accounting for a difference in computational performance?
 
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Darkbreeze

Darkbreeze

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Jun 24, 2014
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Well, it's not that surprising since the Z97 board is a better performer than the Z87 chipset board. If all compatible boards performed the same you could slam an identical cpu in whatever MB was the cheapest and there would be no purpose to having a premium board. The 4790 appears to be compatible with the Z97 board so perhaps you can swap that CPU into the better board and see what your results are between the two boards then. I imagine since everything else is the same the only differences that could cause the performance disparity are the motherboard or a poorly performing SSD. Maybe driver issues on the other system but that's a stretch. You also indicate at first there are two different GPUs but then indicate they are both the same.
 
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DubbleClick

DubbleClick

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Jun 16, 2014
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Aside of the unknown psu brand on the first build, together with a z87 board (those proabably making less of a difference), I see different windows versions on the two rigs.
Now, I might be mistaken, but doesn't win 7 basic limit the usable ram to 8gb?
I would change the psu's (XFX for I7 4790k rig) and then upgrade the windows version. Would kind of suit me better, 'better' components in one, 'cheaper' components in the other.
 
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Darkbreeze

Darkbreeze

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Jun 24, 2014
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It's probably a combination of things including possibly a weak no-name PSU, the better MB chipset, possibly not making full use of the 16GB of RAM (If the windows home version is not Premium) and the read/write speed of the unnamed storage drives. Might even check to see what the page file settings on each rig are.
 
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DubbleClick

DubbleClick

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Jun 16, 2014
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Yeah, if windows 7 home is limited to 8GB, that would explain most of it. As you said, probably the overall combination, although the z87 board is better than the z97 board in this case. I don't think there's compability issues and benchmarks show the z87 pro close to the z97 pro.
 
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