nrpeyton
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Tuesday, November 29, 2016 1:30 AM
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Good evening,
What would "normal operating" VRAM memory temperatures be for an ACX 3.0 1080 during prolonged gaming?
I know this GDDR5X memory heats up a lot more than normal motherboard RAM.
Normal motherboard RAM (even with a small heatsink) being tortured will still never exceed 40/50c.
But what about VRAM on these cards, how does it compare? (I think this would be an interesting 'read' for a lot of people) especially in light of the recent thermal pads issue. (as new memory pads were also an optional add on)?
Also interesting to know; would be the maximum rated temperature for these GDDR5X memory chips :-)
:-)
Nick Peyton
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bcavnaugh
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Re: Memory Temperatures on ACX 3.0
Tuesday, November 29, 2016 1:49 AM
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What device are you going to use the measure yours with, I ask because I could get the same device and use it on my cards before I install some HC Water Blocks. You also know that their was never a "thermal pads" issue. Link
post edited by bcavnaugh - Tuesday, November 29, 2016 1:59 AM
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Sajin
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Re: Memory Temperatures on ACX 3.0
Tuesday, November 29, 2016 4:02 AM
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nrpeyton
Also interesting to know; would be the maximum rated temperature for these GDDR5X memory chips :-)
(0°C ≤ TC ≤ +95°C) according to the micron gddr5x spec sheet.
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nrpeyton
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Re: Memory Temperatures on ACX 3.0
Tuesday, November 29, 2016 6:08 AM
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thank you :-) If I probed the back of the card, with back plate off, (so bare circuit board) how accurate a temp reading would I get? For example:I get a reading on back of GDDRX5 chip of 55c -- what would that equate to as a "real temperate"? -- using the method in my picture below \/ ...notice the "dotted metal imprints" of the GDDRX5 chips like this:  <<temperature probe Reason I'd want to do this is to test for adequate contact from GDDRX5 --> Pad --> WaterBlock Would a 55c reading taken this way be a good VRAM temperature for a water-cooled card? (35c water temp)
post edited by nrpeyton - Tuesday, November 29, 2016 6:12 AM
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Sajin
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Re: Memory Temperatures on ACX 3.0
Tuesday, November 29, 2016 6:47 AM
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Getting a temp reading from the top of the chips would be best. 55c would be a great temp.
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the_Scarlet_one
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Re: Memory Temperatures on ACX 3.0
Tuesday, November 29, 2016 11:42 PM
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If you want to test the pad contact between the memory and waterblock, you should put the pads on the memory (no paste on the gpu yet), set the block on the pads how it will be installed and tighten the screws down. Give it a few seconds to make a good impression. Remove the screws and remove the block and look at the pads. Is there an impression? If so, you have good contact. Add thermal paste and reinstall the waterblock.
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Cool GTX
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Re: Memory Temperatures on ACX 3.0
Wednesday, November 30, 2016 0:15 PM
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Scarlet-Tech
If you want to test the pad contact between the memory and waterblock, you should put the pads on the memory (no paste on the gpu yet), set the block on the pads how it will be installed and tighten the screws down. Give it a few seconds to make a good impression. Remove the screws and remove the block and look at the pads. Is there an impression? If so, you have good contact. Add thermal paste and reinstall the waterblock.
+1 
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Cool GTX
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Re: Memory Temperatures on ACX 3.0
Wednesday, November 30, 2016 0:21 PM
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bcavnaugh
What device are you going to use the measure yours with, I ask because I could get the same device and use it on my cards before I install some HC Water Blocks.
You also know that their was never a "thermal pads" issue. Link
Nice link - good read Thanks
Learn your way around the EVGA Forums, Rules & limits on new accounts Ultimate Self-Starter Thread For New Members
I am a Volunteer Moderator - not an EVGA employee
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When someone does not use reason to reach their conclusion in the first place; you can't use reason to convince them otherwise!
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nrpeyton
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Re: Memory Temperatures on ACX 3.0
Wednesday, November 30, 2016 0:48 PM
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Scarlet-Tech
If you want to test the pad contact between the memory and waterblock, you should put the pads on the memory (no paste on the gpu yet), set the block on the pads how it will be installed and tighten the screws down. Give it a few seconds to make a good impression. Remove the screws and remove the block and look at the pads. Is there an impression? If so, you have good contact. Add thermal paste and reinstall the waterblock.
The way I done it was this (the same idea as yours but slightly different): Follow your steps; but also add a *tiny* amount of paste (extremely thinly spread) on the top of the thermal pad. Then place the block ontop (with all four corners making contact simultaneously or allowing the opposite side to where you want to check contact down first). Then remove block. Most pastes are "sticky" and when you lift the block the pad will come off with it (that's how I done it) :-) Would you say that's adequate? Here are the temps I'm getting: (with 780ti classy block 'custom' fitted to 1080 classy :-) Core was 42candTemps F1, F2, F3 are MEMORYand F4 is VRM Full Size - https://postimg.org/image/t8mgq13al/ I am concerned about the 3 memory chips to the right (F3, closest to VRM) as they are the hottest part of the card (hotter than the VRM and hotter than the core). However those 3 memory chips must still be making contact because when I *stopped" a furmark run it only took exactly 49 seconds from 62c --> 42c Also if they weren't making contact wouldn't temps be 100c + ?
post edited by nrpeyton - Wednesday, November 30, 2016 0:54 PM
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