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Thread: EX58-UD4P -- what is your dpclat? [please post results]




  1. #11

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    Okay, I have an EX58-UD4P and I ran a few tests on Vista 64 on "High Performance" power settings. I dunno how people are getting super-low latencies, perhaps other OS's have better drivers, but here are my results.

    ***UPDATE***: Well I updated some drivers and only the network usage results got better, BUT, after a fresh reboot, I got better results! What I found out was that after an S3 sleep/resume cycle the latencies double. We are well aware of many S3 sleep issues on many X58 boards (not just Gigabyte) so I guess I'm not surprised. Look for my new posts with updated results with a fresh reboot...


    My IDLE results are attached to this post.
    Last edited by demonsavatar; 05-24-2009 at 11:24 PM.
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  2. #12

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    My results while running PRIME95 Blend mode are attached to this post.
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  3. #13

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    My HIGH NETWORK USAGE results are attached to this post. (Built-in Realtek NIC)
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  4. #14

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    CPU-Z really kills it.

    My results while running CPU-Z are attached to his post. The huge spike at the beginning is CPU-Z starting. I'm guessing there are a lot of low level system calls going on there.
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  5. #15

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    OK, so here are the results again after a fresh reboot, not including CPU-Z results because I don't think that test makes any sense anyway. Clearly the S3 sleep/resume I had done before the last set of results has a significant affect on performance.

    My results at IDLE are attached to this post.
    Last edited by demonsavatar; 05-24-2009 at 11:31 PM.
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  6. #16

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    My results running PRIME95 Blend are attached to this post.
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  7. #17

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    My results with HIGH NETWORK USAGE are attached to this post.
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  8. #18
    Join Date
    May 2009
    Posts
    7

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    hi demonsavatar,

    That was some very insightful testing.
    There's a lot to be learned from your tests.

    Does it permanently increase DPC Latencies every time you S3 sleep and resume?

    Also, you had two different high-network-usage tests, but one of them scored much better than the other. The bad one was the builtin Realtek nic. What was the other NIC you used for the second(last) test?

    The fact that you're getting the "1000us" test-interval is really, really strange.
    I'm wondering if certain BIOS tweaks or overclock settings happen to push it into 1000us mode.

    As far as I understand, it means your clock resolution was changed slightly.
    As I said before there's two variants. 976's and 1000's.
    test-interval = 976's boards tend to get quite a bit lower latencies.
    I know the EX58's will do 976... I've seen a few posts of an audio rig @ 976 on an Gigabyte EX58 board.

    Something I should note:
    disabling Firewire, builtin sound, etc in the BIOS -- ANY unused builtin devices can significantly lower the dpclat results.

  9. #19

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    Quote Originally Posted by Zol View Post
    Does it permanently increase DPC Latencies every time you S3 sleep and resume?
    From what I've seen they stay high, can't figure out why.

    Quote Originally Posted by Zol View Post
    Also, you had two different high-network-usage tests, but one of them scored much better than the other. The bad one was the builtin Realtek nic. What was the other NIC you used for the second(last) test?
    Same card, updated to the latest drivers from Realtek's website.

    Quote Originally Posted by Zol View Post
    The fact that you're getting the "1000us" test-interval is really, really strange.
    I'm wondering if certain BIOS tweaks or overclock settings happen to push it into 1000us mode.
    No idea what this means :p I'll try all default settings (no overclock and some slightly different power settings) and see what happens.

    Quote Originally Posted by Zol View Post
    Something I should note:
    disabling Firewire, builtin sound, etc in the BIOS -- ANY unused builtin devices can significantly lower the dpclat results.
    Did that, the only one that made a slight difference was my old DVD burner which is PATA. However, the difference was only noted after a resume from S3 sleep. Otherwise disabling anything didn't really matter.

    Hope I can be of further help :)
    i7 920 C0/C1 3841A
    24/7 OC: 21x183Mhz = 3.84Ghz @ stock Vcore/QPI voltages
    Thermalright Ultra-120 Extreme 1366
    3x2GB OCZ DDR1600 OCZ3P1600LV6GK
    EX58-UD4P BIOS F11
    EVGA GTX 260 Core 216 SC 55nm 896-P3-1257-AR
    Antec NEO HE 550 Power Supply

  10. #20
    Join Date
    May 2009
    Posts
    7

    Default Re: EX58-UD4P -- what is your dpclat? [please post results]

    Regarding the 1000us timer resolution modulo:

    I just noticed you said you're running Win 64
    If you used stock settings and never got 976, it might possibly be that 64-bit windows always uses that alternative timer setup.

    Unverified!

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