Sign in with
Sign up | Sign in
Your question
Solved

I5 750 and 1600mhz Ram

Last response: in Overclocking
Share
December 7, 2010 10:59:09 AM

Ok i have made enough posts about this particular OC but i decided to get it done and i want a more expert opinion about this.
I have an i5 750 stock speeds with an 2x2GB XMP 1333 7-7-7-20 Kingston Ram 1.65v.
I want to raise the BCLK to 160 and make the RAM run at 1600mhz. I need instructions on how to make the RAM run at 1600mhz and if i have to manually change the timings for it to run at that frequency.

EDIT : Does Ram really needs to follow my CPU when overclocking? I mean can i get a BCLK 150 or 160 and not overclock the RAM or mess with it's timings?

More about : 750 1600mhz ram

a b à CPUs
a c 100 K Overclocking
December 7, 2010 4:37:19 PM

RAM will be a multiple of the base clock, you can select 6x, 8x, and 10x.

Generally auto timings will work, but to guarantee the right speeds then just do it manually, along with setting 1.65V.

I use 177 base clock, and 1426mhz RAM at CL7 (it's rated 1600mhz CL8)
m
0
l
Related resources
December 8, 2010 5:17:59 AM

I will start with 150 BCLK and x9 multiplier to get 1350mhz. The guides are ok but nothing specific. Can i run this specific RAM at 1600mhz 8-8-8-24?
m
0
l
a b à CPUs
a b K Overclocking
December 8, 2010 5:50:10 PM

Here is what I did (worked good)
(1) Set Memory in bios to use XMP profile 1 (Have Ripjaw DDR3-1600 CL7. Booted to boot disk with memtest 86 and ran memtest for 1 Hour, had no mem errors. Note this changed by bclk and cpu Multipler, but end result CPU was still at stock freq.
(2) cheated, Used Gigabyte Easytune 6- came up with 3 options 3.2, 3.6 and 3.8. I first tried the 3.2, rebooted and ran Prime 95 for an Hour (MONITOR TEMPs) then tried the inbetween OC same-same, then tried the 3.8 - WORKED, However it set vcore higher than it need to be, so manually reduced to lowest setting and still stable, ended up with 1.24 V and Temp after 1 hour of prime95 max core temp was 62C. Currently running @3.2Ghz and vcore at 1.1 V
m
0
l
a b à CPUs
a c 100 K Overclocking
December 8, 2010 9:26:20 PM

Depends on the exact RAM, but it seems like it could run 1600mhz CL8, yes. You should be able to look up the speeds, in fact they're usually on a sticker on the sticks themselves.

Personally, I don't like XMP because it runs a "guaranteed to work" OC, so usually it's aggressive on the voltage bumps to accomodate a lot of systems. Better to fine tune your own OC to get as much speed at as low of voltages as possible.

Anyway, if you're running stock cooler, 150 base clock should probably still be ok temps wise. If you get even a cheaper heat sink like the Hyper 212+ you'll be able to push 3.6ghz or more safely, so long as you are are fairly careful about your OCing (ie, don't make a huge bump up in any voltages, just take it easy)
m
0
l
December 9, 2010 7:53:46 AM

Indeed i can only select x6, x8 or x10 for memory multiplier so if i go to 150 BCLK i have to run either on 1500mhz or 1200mhz. I am guessing an OC to the CPU will produce more performance than running at stock with 1333 ram so i will go with 150 BCLK with turbo boost enabled and set the ram to 1200 with tighter timings maybe 6-6-6 or 5-5-5. I will check the temps again after i disable XMP indeed 1.29 volts with no overclock is indeed very high. XMP tends to overvolt but i will not set the volts manually, i can't do that.
So to summarise i go in the bios load optimised defaults, set BCLK to 150, set ram multiplier x8, set Expert mode to select timings experiment with what works and finally set ram voltage to 1.65 ( or 1.66 i think it has even numbers). Should i be doing anything else?
m
0
l
December 9, 2010 10:51:22 AM

I decided to go with Turbo boost disabled. Set the BCLK 170 and the Ram multiplier x8 resulting to a constant 3.4ghz on CPU and 1360 on RAM. I need help with the voltages should i leave everything on AUTO? I hear that with this OC it can run on stock voltages.
m
0
l

Best solution

a b à CPUs
a c 100 K Overclocking
December 9, 2010 7:54:20 PM

How are your temps? On stock cooling?

Auto voltages are usually a bit high. You can use it as a starting point, and drop the Vcore and IMC/VTT one at a time until unstable, then set back to the last stable voltage. Run Intel Burn Test on High stress for 10 passes - this will also heat the CPU to the max.

Just FYI, I'm running 177 base clock daily, with turbo boost enabled and 8x multiplier. My 1600mhz CL8 RAM is now running at 1416mhz CL7 stable, and my voltages are... 1.38V Vcore (Load Line Calibration off, so it's actually around 0.09V less under load) and VTT is... 1.25V or so. My max temp is around 73C under stress test, so everything is fine. 3.7ghz, up to 4.25ghz turbo is pretty nice and snappy :D 
Share
December 15, 2010 8:54:06 AM

Best answer selected by darkling.
m
0
l
!