GTX 1070 not boosting right

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Jamezz2

Jamezz2

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So I just bought a new Evga GTX 1070 SC, and when I got home and tried to overclock it, it did the same thing my previous video card did. It'll boost up to a clock speed, but it won't stay there. Even running unigine heaven on only 1080p quality, precisionx still says it's hitting the power limit and the core clock constantly flucutates. I've tried maxing out the power and temp limit, i've set the fan to 90% when running heaven, i've maxed out the voltage. I have no idea why it's not boosting to its max speed and staying there. My last video card did the same thing though, so I'm thinking it might be something to do with my computer but i'm not sure. The specs are an i5-4590, 8gbs of Hyperx ram, Asrock z97 Extreme 6 mobo, and an Evga NEX750b psu. Any ideas?
 
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Jamezz2

Jamezz2

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That's the thing, it'll do this even as soon as I start running the benchmark. It was idling at like 40c when I started it, and it still seemed to be throttling.

 
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Jamezz2

Jamezz2

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Okay, but is it normal for 1070 to have close to 100% usage in a 1080p benchmark?
 
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1LiquidPC

1LiquidPC

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I'd think so, otherwise you'd have a CPU bottleneck. It should be pushing the FPS as high as possible up to it's power and temp limits regardless of resolution used in the benchmark. When I tested my 1080 in 3DMark standard Firestrike, it renders at 1080P and GPU usage was 99% I believe.
 
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Jamezz2

Jamezz2

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Hmm, that makes sense when you say it like that. With your 1080, how much could you add to the core clock? Because I added 125 and when I tried playing both Witcher 3 and Crysis 3, the game crashed. So I'm back down to +100, which puts my boost clock at only 1950, give or take 25 because it's constantly fluctuating.

 
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1LiquidPC

1LiquidPC

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I'm at +150 core and +300 memory on my Founder's Edition 1080. This gives me 2050 on core and 10.6Ghz on memory. Just got done playing Witcher 3 myself, fantasic game, whole series actually. I took temps away from causing downclocking, as I'm using a custom loop WC. My clockspeed is nearly contant at 2050 during Witcher 3 gaming. However, I have noticed using PrecisionXOC OSD, that when my power limit hits around 115%, I'll downclock to 2025-2000 or so for a few seconds. This is a pretty rare event though, unless tons of action on screen.
 
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Jamezz2

Jamezz2

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I just ran the unigine heaven benchmark and I was watching gpu-z, it said that it was limited by the available power limit or something like that. Given that, without flashing a bios on it there isn't anything I can do is there? Also I confirmed even at default settings, the core clock fluctuates a lot; going up and down by around 50-75mhz. All I can figure about that is something else in my system, considering it happened with my previous gpu also.
 
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1LiquidPC

1LiquidPC

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A modded BIOS or board itself could raise voltage and power limits, but I'm not one to ask about that. To risky for me. What are your temps like even at stock? I had lots of fluctuation myself on aircooling. My 1080 was showing this behavior during my initial testing as well. I noticed that after the temps rise above 50C, the core speeds start stepping down. It doesn't take until you get to your temp limits(mine was 83C) to start dropping. Watercooling is another story. With my previous 970 SLI and my 1080, temps don't go high enough to start dropping, so clockspeeds remain static and don't move other than close to power limits. At stock and aircooled, my 1080 would boost up to 1898 by itself with no adjuments. Quickly in games though, it would settle down to the mid 1700s range and flucuate around.
 
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Jamezz2

Jamezz2

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My temps depend on the fan curve really, but normally when I run the benchmarks they max in the low 60s. And idle is normally around 40c. My room is warm, plus I'm still messing with fan curves to get one I like
 
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