Intel 4790K and Mushkin RAM Voltages

[YroPro]

Hello everyone,
I was looking for a good set of 16GB (8GBx2) RAM on Newegg, and Mushkin seemed consistently fastest for the price. I couldn't figure out why until I noticed the voltage, all of them being over 1.5, usually 1.6x. (at least in the 2100mhz+ range) The Intel 4790K is listed as only being compatible with 1.5v RAM on https://pcpartpicker.com.

Would I damage my CPU using 1.65v Mushkin RAM? I see lots of people talking about overclocking their RAM but I haven't really seen any voltages.

Thanks!

 

[YroPro]

Ah, I've never had that issue. I run 1.58-1.6v with anywhere from 4.8-5.0hgz overclock without hitting 80c.

 

[DubbleClick]

That would in no way cause 20C difference in temperatures. I've tried running my ram at 1.35v, 1.5v and 1.65v - no impact on prime 26.6 temperatures.

 

[W1ndowl1cker]

That would in no way cause 20C difference in temperatures. I've tried running my ram at 1.35v, 1.5v and 1.65v - no impact on prime 26.6 temperatures.

I'm on a Gigabyte Z97 D3H and when I ran the Intel Extreme TU my CPU total TDP went past 130 W in a few seconds.
As soon as I lower my ram voltage from 1.65 to 1.5 V the CPU total TDP stays around 90-100 w and temps are MORE THAN 20 degrees Celcius lower.

 

[DubbleClick]

Something else is definitely broken in your system, though. You should at most see temperatures in the 60s while gaming, on the stock cooler.

My tdp also stays below 90w on the xtu cpu test. Doesn't surpass 100w on 4.6 ghz (skyrockets to ~150w at 4.8ghz, tho) and all that doesn't change at all when changing ram voltage.

 

[W1ndowl1cker]

Something else is definitely broken in your system, though. You should at most see temperatures in the 60s while gaming, on the stock cooler.

My tdp also stays below 90w on the xtu cpu test. Doesn't surpass 100w on 4.6 ghz (skyrockets to ~150w at 4.8ghz, tho) and all that doesn't change at all when changing ram voltage.

Turns out you were right after all.

Refitted my CPU cooler, again, and now temps never even hit 70 degrees Celcius.
BTW: I'm on G.Skil Ripjawz now on 2133 CL9 at 1.63V. Temps are 10 degrees higher than when I'm on 1.5V though...

Thanks for your patience

 

[DubbleClick]

That's really strange, are you sure the ram frequency isn't causing the motherboard to screw some settings that are set to "auto"? If you fix cpu clock, cpu voltage, ring clock, vring and vccin, that really shouldn't happen.

Good your temperatures are better now.

 

[newmen92]

I can't believe nobody checked this the i7-4790K can only support "DDR3 1333/1600" I am wondering how you could go higher than 1600

Source
http://ark.intel.com/products/80807/Intel-Core-i7-4790K-Processor-8M-Cache-up-to-4_40-GHz

-.-

 

[YroPro]

I can't believe nobody checked this the i7-4790K can only support "DDR3 1333/1600" I am wondering how you could go higher than 1600

Source
http://ark.intel.com/products/80807/Intel-Core-i7-4790K-Processor-8M-Cache-up-to-4_40-GHz

-.-

It uh, definitely works as I use 2133mhz RAM with my 4790k.

 

[newmen92]

I can't believe nobody checked this the i7-4790K can only support "DDR3 1333/1600" I am wondering how you could go higher than 1600

Source
http://ark.intel.com/products/80807/Intel-Core-i7-4790K-Processor-8M-Cache-up-to-4_40-GHz

-.-

It uh, definitely works as I use 2133mhz RAM with my 4790k.

man i'm confused why would Intel say a thing if it's not totally true..... but if i go higher to for example 2400mhz will it effect the cpu or MoBo or ram in the long period ?

 

[YroPro]

man i'm confused why would Intel say a thing if it's not totally true..... but if i go higher to for example 2400mhz will it effect the cpu or MoBo or ram in the long period ?

They just won't support you if anything goes wrong when you use anything out of their recommendations. They're very "hands-off" and slightly against overclocking/etc.