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Hot!Wildly differing results with a my brother's 3080 ftw3 ultra and mine

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vivagil
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2021/01/15 00:19:19 (permalink)
My brother just got a gpu from queue and while we played together I noticed that he was getting about 15-20% worse performance than me in both games and synthetic benchmarks.
His specs: ryzen 3900x, msi meg x570 unify, 64gb 3200mhz ram, and 3 m.2 drives of storage. 
 
Mine: Intel i7 10700k, Asus tuf h470 pro (wifi), 32 gb, g.skill ripjaws V 3200mhz, with 2 m.2 drives connected. 
 
The score on the left is his. He gets very slightly higher average clock and I'm getting higher memory speed by 21 mhz. Yet his score is nearly 2000 points lower and 20 percent lower fps/score on average less than mine. Tried looking for options in the bios that might help and it's not very featured so there really isn't a lot we can tweak. Any insight you'd have would be greatly appreciated. 
 
 

post edited by vivagil - 2021/01/15 00:29:16

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    bmgjet
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 01:43:44 (permalink)
    Theres bad cooler contact on his vram.
    Memory clock and Memory clock average should always match.
    #2
    the_Scarlet_one
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 01:46:31 (permalink)
    Can you post the actual benchmark scores, especially the links to the benchmarks, so that people can look at what is happening?

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    #3
    vivagil
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 01:51:25 (permalink)
    the_Scarlet_one
    Can you post the actual benchmark scores, especially the links to the benchmarks, so that people can look at what is happening?

    This is his https://www.3dmark.com/pr/777893
     
    Here is mine https://www.3dmark.com/pr/777889
     
    #4
    Hoggle
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 02:43:34 (permalink)
    Do both of them have X1 installed and the firmware updated?  The biggest difference I am seeing is that temperature change between the two 58C vs. 73C means he has way better cooling in his system or the card isn't running at full power. Of course this is based on thinking they are exactly the same model. If he has like a water cooled or hybrid then that could explain it.

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    #5
    vivagil
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 02:46:26 (permalink)
    Yup. Actually i think he's using the xoc bios and I'm on stock, but the cards are the same model.
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    TT158
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 03:31:31 (permalink)
    I had a big performance decrease (not as extreme as the above, granted, but around 8 to percent) on my 3080 ftw3 ultra just from having X1 open. Clocks and GPU usage showed the same. Perhaps see what happens on his if he closes X1? Makes no sense, I know, but it was reproducible for me.
    #7
    SeanDude05
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 08:13:55 (permalink)
    DDU drivers and reinstall fresh. Close PX1 during runs. Maybe reinstall Windows.


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    aka_STEVE_b
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 08:21:26 (permalink)
    There are also going to be little differences between the speed of the hard drives accessing data  -and the efficiency of the processor cores , ...
    plus the fact that his ryzen would benefit from better ram timings/speed etc. ( he should run no more than  2 sticks of 3600 speed for that Ryzen cpu )
    ...and then you are using completely different motherboards & chipsets as well .  
    Two different systems are going to get two different results.... you're comparing apples to oranges here .

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    #9
    vivagil
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 09:39:11 (permalink)
    SeanDude05
    DDU drivers and reinstall fresh. Close PX1 during runs. Maybe reinstall Windows.


    Completely new windows install produced no change
    #10
    bradsour
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 09:57:17 (permalink)
    Definitely seems like his is having a memory issue. Are you using default stock settings on both or are they OC'd? Are you running stock BIOS or the 450 Watt BIOS?

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    #11
    vivagil
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 09:59:40 (permalink)
    bradsour
    Definitely seems like his is having a memory issue. Are you using default stock settings on both or are they OC'd? Are you running stock BIOS or the 450 Watt BIOS?


    I'm running stock, they haven't changed anything. Xoc and stock bios produced no difference.
    #12
    schulmaster
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 10:21:23 (permalink)
    Does he have SMT disabled in BIOS? If not, that's his issue. Needs to be disabled because SMT amplifies memory access latency on Ryzen.

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    bmx045
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 10:25:07 (permalink)
    vivagil
    Yup. Actually i think he's using the xoc bios and I'm on stock, but the cards are the same model.

    use the oc bios for better fan curve....your thermals are killing your performance

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    #14
    RainStryke
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 10:40:23 (permalink)
    Port Royal doesn't depend on the CPU as much, so the one with the highest frequency is going to get the better score.
     
    If you want to see a better comparison, i'd run Time Spy and compare.
     
    You are also running different RAM speeds, he's 2133MHz native while you are 2933MHz native which gives the CPU performance a nice boost.

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    vivagil
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 11:29:03 (permalink)
    bmx045
    vivagil
    Yup. Actually i think he's using the xoc bios and I'm on stock, but the cards are the same model.

    use the oc bios for better fan curve....your thermals are killing your performance
    it's kind of strange because on equal settings in game and benchmarks mine is actually performing better even while hotter. The only difference in cooling is that he has an aio and I'm on good ole reliable cooler master hyper 212 evo.
    #16
    kevinc313
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 11:59:15 (permalink)
    ATTN
    Your brother's ram XMP is not enabled and it's running at 2,133mhz, which is massively hindering system performance.
    #17
    Bluedragonwolf
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 12:02:37 (permalink)
    My best estimation is that something isn't making proper contact with his heatsink/cooler on the gpu.  Best guess, memory (VRAM).  The great thing about having the ftw3 is you can check the icx3 in Precision X1.  It should give temperature sensors across the board.  See if one is WAY hotter than others. Or too cool even.  Basically, we don't want to see a large delta between temperature sensors on the same "pieces" (aka Memory, or Power, etc.).  A large delta would mean something is wrong (bad mount, bad chip, dead chip, bad power delivery for examples).  At the hottest, last I checked, my delta was around 3C between the three different memory sets and I think 5C on the two die sensors.  And, Ignoring the performance metric for a sec, you can run X1 during the benchmark with the ICX sensors showing to make sure.  I think X1 has an always on top setting, but if not, you can run the benchmark windowed in a custom run.  Feel free to report back the ICX temps.
     
    That said, Neither one of you are running your RAM at 3200MHZ.  They appear to be running baseline for the motherboard.  Just putting that out there.
    #18
    vivagil
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 19:50:08 (permalink)
    Thanks. We've tried a few of these things. Especially the ram stuff with almost no change. Thank you for everyone's help.
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    vulcan1978
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 20:49:45 (permalink)
    I wonder if his card is affected by the PCI-E load balancing power draw issue that an alarming large number of FTW3's seem to suffer from. This would explain the 58C operating temperature as well. I suggest monitoring power draw either with Killawatt from the socket or Hwinfo64. 

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    arestavo
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/15 22:55:58 (permalink)
    vulcan1978
    I wonder if his card is affected by the PCI-E load balancing power draw issue that an alarming large number of FTW3's seem to suffer from. This would explain the 58C operating temperature as well. I suggest monitoring power draw either with Killawatt from the socket or Hwinfo64. 


    I think that's primarily a 3090 issue.

    It's more likely a CPU/RAM bottleneck. SMT disabling and faster RAM will help. An easy test would be to just swap the cards around and see if the problem follows - or stays with that CPU/RAM combo.

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    Bluedragonwolf
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/16 00:44:31 (permalink)
    arestavo
    vulcan1978
    I wonder if his card is affected by the PCI-E load balancing power draw issue that an alarming large number of FTW3's seem to suffer from. This would explain the 58C operating temperature as well. I suggest monitoring power draw either with Killawatt from the socket or Hwinfo64. 


    I think that's primarily a 3090 issue.

    It's more likely a CPU/RAM bottleneck. SMT disabling and faster RAM will help. An easy test would be to just swap the cards around and see if the problem follows - or stays with that CPU/RAM combo.



    Even bottlenecked he shouldn't be scoring 9500 in Port Royal with a 3080.  I mean, I'm running a 3900x for the moment, albeit with my ram at 3600.  And I'm scoring 11700 with all my background crap running.  9500 is way too low.  A CPU/RAM bottleneck should not be making a 2000 point difference in that benchmark, since it is so heavily GPU dependent and not so much CPU/RAM.  I would still like to see an ICX screenshot with a continuous benchmark run/stress test going.  
     
    That said, never a bad idea to swap gpu's in this instance.  Easy way to eliminate any outside factors other than gpu.  I mean, it could be something wrong on the motherboard itself even. A swap would settle the issue of GPU or not either way.
    #22
    _Gir_
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/16 09:56:41 (permalink)
    Swap cards and see if the problem follows to your machine.
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    vulcan1978
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/16 10:20:23 (permalink)
    arestavo
    vulcan1978
    I wonder if his card is affected by the PCI-E load balancing power draw issue that an alarming large number of FTW3's seem to suffer from. This would explain the 58C operating temperature as well. I suggest monitoring power draw either with Killawatt from the socket or Hwinfo64. 


    I think that's primarily a 3090 issue.

    It's more likely a CPU/RAM bottleneck. SMT disabling and faster RAM will help. An easy test would be to just swap the cards around and see if the problem follows - or stays with that CPU/RAM combo.



    It's a possibility, I didn't realize PR was CPU or memory dependent: 
     
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    arestavo
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/16 10:27:23 (permalink)
    vulcan1978
    arestavo
    vulcan1978
    I wonder if his card is affected by the PCI-E load balancing power draw issue that an alarming large number of FTW3's seem to suffer from. This would explain the 58C operating temperature as well. I suggest monitoring power draw either with Killawatt from the socket or Hwinfo64. 


    I think that's primarily a 3090 issue.

    It's more likely a CPU/RAM bottleneck. SMT disabling and faster RAM will help. An easy test would be to just swap the cards around and see if the problem follows - or stays with that CPU/RAM combo.



    It's a possibility, I didn't realize PR was CPU or memory dependent: 
     
    5950x slower In Port royal Benchmark then 9900k | Overclock.net


    It is up to a certain point, then it doesn't really scale better. Well, maybe a couple of points (literally) with a higher OC/RAM speed - but there is a definite, hard drop off point.
    post edited by arestavo - 2021/01/16 10:29:28

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    Bluedragonwolf
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/16 10:38:09 (permalink)
    arestavo
    vulcan1978
    arestavo
    vulcan1978
    I wonder if his card is affected by the PCI-E load balancing power draw issue that an alarming large number of FTW3's seem to suffer from. This would explain the 58C operating temperature as well. I suggest monitoring power draw either with Killawatt from the socket or Hwinfo64. 


    I think that's primarily a 3090 issue.

    It's more likely a CPU/RAM bottleneck. SMT disabling and faster RAM will help. An easy test would be to just swap the cards around and see if the problem follows - or stays with that CPU/RAM combo.



    It's a possibility, I didn't realize PR was CPU or memory dependent: 
     



    It is up to a certain point, then it doesn't really scale better. Well, maybe a couple of points (literally) with a higher OC/RAM speed - but there is a definite, hard drop off point.


    All this talk about it being the cpu and ram. For giggles, I turned my ram down to 2133 this morning. As a reminder, my machine is a 3900x with smt still on, ram now at 2133, and a 3080 running stock for this instance. I ran port royal. I got 11463. So I dropped 350ish points from moving my ram way down from 3600. But it's not 2000 points like OP brothers Port Royal score.

    Just switch the cards in the machines, let's confirm its the gpu. Then probably just get an RMA going.
    #26
    Gogod2020
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/16 13:41:46 (permalink)
    From my experience 3dmark won’t run with PX1 open so just load your preferred profile and shut it down. Below is my score on stock settings.

    Couldn’t upload direct from my phone.

    https://ibb.co/2MV7HW7
    post edited by Gogod2020 - 2021/01/16 13:48:21

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    MKAALAWAJI
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    Re: Wildly differing results with a my brother's 3080 ftw3 ultra and mine 2021/01/19 04:18:08 (permalink)
    maybe the difference in cpu 
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