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Am I going to fry my 1055T @ 3,5GHz? - Page 2

post #11 of 36
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Quote:
Originally Posted by coonmanx View Post
No good reason to undervolt the ram. Run it at what it is supposed to run at (1.65V). The idea of OC'ing is to have the ram running as close to or slightly under its rated speed when you have reached you OC'ing target speed. Timings should be set to rated timings for the rated speed. You can mess with timings when all else is said and done.
http://www.kingston.com/hyperx/products/blu.asp The third product from there is mine, and it says

Default = DDR3-1333 CL9-9-9 1.5V

And above that it says

HyperX = DDR3-1600 CL9-9-9-27 1.7V-1.9V

So which one should I believe now? I always went with the first one so but if that's wrong it'd explain a lot of the BSODs
Edited by Shiobock - 2/6/11 at 9:05am
    
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post #12 of 36
This is typical of how ram is rated. They take 1333 speed ram, give it more voltage and then when they get it to hit 1600 speed they rate it as DDR3 1600. So it appears that if you only want to run it at 1333 speed you could use only 1.5 volts. If you want to run it at 1600 speed you need to use 1.7 volts (or maybe a little bit more). However the fourth line says 1.65 volts which is also what the Newegg link said. Sometimes you have to play with it. Best to go with the lowest volts that still allow you to run the ram at the speed you want to run at.

This is truly a little "trick" that ram manufacturers use. They all do it and it is called "binning".
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post #13 of 36
Thread Starter 
Quote:
Originally Posted by coonmanx View Post
This is typical of how ram is rated. They take 1333 speed ram, give it more voltage and then when they get it to hit 1600 speed they rate it as DDR3 1600. So it appears that if you only want to run it at 1333 speed you could use only 1.5 volts. If you want to run it at 1600 speed you need to use 1.7 volts (or maybe a little bit more). However the fourth line says 1.65 volts which is also what the Newegg link said. Sometimes you have to play with it. Best to go with the lowest volts that still allow you to run the ram at the speed you want to run at.

This is truly a little "trick" that ram manufacturers use. They all do it and it is called "binning".
I'm aware of binning and guessed that they might do it with RAM too, but yeah I'd rather run everything at lowest possible volts and since RAM-overclocking hardly increases performance I don't think I'm going to do it, unless 1600 would be much more stable than 1333.
    
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post #14 of 36
I've run as high as 1.6 without issues as long as cooling is sufficient you're good. It will remain stable at much lower clocks though, RAM is usually the issue when it comes to stability. and 1100mhz overclock on these takes minutes...fine tuning consumes you the rest of the time.
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post #15 of 36
@OP

Use HWMonitor and monitor the CPU socket temp. Do not add any values to it as it'll be as accurate as you can get without physically reading the CPU temp with a sensor. Core temperatures are not important, only your CPU socket temp.

Useful information for you:

Stock voltages are 1.325v for VCORE and 1.175v for CPU/NB according to AMD. However, your motherboard will determine the voltages (obviously) unless manually set. Some may default lower or higher, board depending.

The most voltage you can apply to the VCORE is generally 1.55v because you'll hit a temperature wall at this voltage (or close to it) and won't see gains/returns in performance beyond. As long as your cooling is sufficient you can run 1.5v 24/7, maybe even 1.55v. You'll induce more heat when you start increasing the CPU/NB voltage, so try to get it stable at the lowest you can if you're overclocking your CPU/NB.

If you aren't overclocking your CPU/NB, it will give a good boost to games and apps using less than six cores but won't help much if you're using programs that fully utilize all of your cores.

RAM is generally the limiting factor in overclocking. RAM voltages will completely vary depending on speed, timing, manufacturer, etc. For instance, my RAM is rated (stock) for 7-6-6-24-27 @ 1.8v and warrantied good up to 1.95v. I can run 1333 @ 1.5v with it, however. but for 1600 @ 7-6-6-16-21 it requires minimum 1.82v.

Hope some of that helps.
    
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post #16 of 36
You paid for performance. If you want to run generic 1333 CL9 settings over 1600Mhz CL9, return the memory and get the cheapest 1333 CL9 kit possible instead. Besides, with a 1055T and overclocking, 1333Mhz is most likely going to hold you back due to the picky bus clock/ratio options between CPU and memory.
post #17 of 36
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Quote:
Originally Posted by xd_1771 View Post
You paid for performance. If you want to run generic 1333 CL9 settings over 1600Mhz CL9, return the memory and get the cheapest 1333 CL9 kit possible instead. Besides, with a 1055T and overclocking, 1333Mhz is most likely going to hold you back due to the picky bus clock/ratio options between CPU and memory.
No need to type with such pathos, but thanks for the actual info and it's good to know overclocking or atleast running the RAM at the actual speed will help, because earlier I didn't think it matters more than a fraction of a percent. Besides the HyperX blu 1600MHz was the cheapest RAM when I bought it, I'd hate to get some 1066MHz ValueRAM for 20€*more.

Quote:
Originally Posted by GanjaSMK View Post
Use HWMonitor and monitor the CPU socket temp. Do not add any values to it as it'll be as accurate as you can get without physically reading the CPU temp with a sensor. Core temperatures are not important, only your CPU socket temp.
AMD themselves said the first batches of Thuban measure 7-13°C cooler than they actually run. I don't think my CPU runs at 37°C under load. But in case HWMonitor lets me read the socket temp too I'll use that, because so far none of the programs except AMD's own weird overclocking suite have allowed me to see that temperature.
Edited by Shiobock - 2/6/11 at 11:06pm
    
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post #18 of 36
HWMonitor will show you a lot of temperatures, including cores and socket, and others.
    
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post #19 of 36
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Quote:
Originally Posted by GanjaSMK View Post
HWMonitor will show you a lot of temperatures, including cores and socket, and others.
Socket temp is 54°C after a few hours of prime95 large FFT. RAM is now 1667MHz, 1.65V (although the BIOS highlighted it, implying it's now overvolted). vCore is 1.28V with LLC on, and 1.36V under stress. It's a lot more stable now, thanks everyone!

Although now my idle socket temp is 37°C and under load it goes to 54°C. I don't know if it's high but it sort of feels high :|
Edited by Shiobock - 2/8/11 at 9:39am
    
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post #20 of 36
Quote:
Originally Posted by Shiobock View Post
Socket temp is 54°C after a few hours of prime95 large FFT. RAM is now 1667MHz, 1.65V (although the BIOS highlighted it, implying it's now overvolted). vCore is 1.28V with LLC on, and 1.36V under stress. It's a lot more stable now, thanks everyone!

Although now my idle socket temp is 37°C and under load it goes to 54°C. I don't know if it's high but it sort of feels high :|
hm that sounds a bit high for a 3.5ghz oc, whats your ambient temperature?

EDIT: you wrote in a earlier post on the first page that you bumped the NB voltage from 1.23 ... how high is that voltage? because i never experienced any instability problems @1.15v or whatever the stock is @ 3.5ghz
Edited by kromar - 2/8/11 at 11:32am
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