Help with unstable PC...

[AugGust]

Good day all~

So I've added some ram to my PC... And now I have 2x G-Skill 4GB DDR3 and 2x Corsair Vengeance 4GB DDR3 sticks, for a total of 16GB. I have tested that all of them work perfectly (each pair). However when I have all of them in (installed A-B-A-B), my PC becomes really unstable and cuts power quite often

They're both supposedly 9-9-9-24 1600MHz ram, but CPU-Z tells a different story but I don't really understand any of this...

Corsair Vengeance Ram

G-Skill RipJawX Ram

Does somebody know what I should do/set in the bios to make it stable while losing the least performance? Thanks very much guys ><

 

[lifeishard]

Good day all~

So I've added some ram to my PC... And now I have 2x G-Skill 4GB DDR3 and 2x Corsair Vengeance 4GB DDR3 sticks, for a total of 16GB. I have tested that all of them work perfectly (each pair). However when I have all of them in (installed A-B-A-B), my PC becomes really unstable and cuts power quite often

They're both supposedly 9-9-9-24 1600MHz ram, but CPU-Z tells a different story but I don't really understand any of this...

Corsair Vengeance Ram

G-Skill RipJawX Ram

Does somebody know what I should do/set in the bios to make it stable while losing the least performance? Thanks very much guys ><

CL-latency must be same. I see 1 pair is CL9 while the other pair is CL11?

 

[AugGust]

CL-latency must be same. I see 1 pair is CL9 while the other pair is CL11?

This is when they're seperately installed with their default settings. I've tried setting them all to 9-9-9-24 in the bios when they're all installed together but its still unstable...

 

[yusoffb01]

try running at 1333 for all

 

[AugGust]

try running at 1333 for all

Yep just tried this too... It still crashes if I push the PC, like play any games or stuff

 

[lifeishard]

that is why the rule of thumb is to buy same brand same speed/CL rams when you are looking at second pair.

If i am not wrong, speed wise not so impt, default CL should be same is more impt. For speed, the faster speed pair will just run at the same speed as the lower speed's pair.

Either find someone to trade or sell a pair off is your only option.

 

[hlots123]

They're both supposedly 9-9-9-24 1600MHz ram, but CPU-Z tells a different story but I don't really understand any of this...

cpuz spd tab, select each slot, can u cfm all the sticks are 800mhz 9-9-9-24 at right most column?

 

[Crooni]

if you're sure the instability is caused by ram, generally ram needs to run at the same timings.

bios just detects spd and runs the most compatible timings, which in this case is still not stable

manually clock all to 11-11-11-29, command rate 2t, voltage 1.5v, stress test.

if stable then slowly tighten timings.

if not stable then have keep relaxing timing, down clock, or even undervolt.

 

[AugGust]

cpuz spd tab, select each slot, can u cfm all the sticks are 800mhz 9-9-9-24 at right most column?

Yes I just checked all 4. The right most column says "XMP-1600", all are 9-9-9-24 @ 2T. However I just noticed that the tRC is different? the G.Skill ram is at 33 while the corsair ram is at 41. Could that be the issue?

 

[AugGust]

if you're sure the instability is caused by ram, generally ram needs to run at the same timings.

bios just detects spd and runs the most compatible timings, which in this case is still not stable

manually clock all to 11-11-11-29, command rate 2t, voltage 1.5v, stress test.

if stable then slowly tighten timings.

if not stable then have keep relaxing timing, down clock, or even undervolt.

Yea I already tested this too its also just not stable..

 

[LLCSG12]

I dunno wat motherboard u using.

But first thing first is always update bios to latest version

I mixed gskills 1866hz with corsair's 1600 ddr3 .. no issue..

 

[lifeishard]

I dunno wat motherboard u using.

But first thing first is always update bios to latest version

I mixed gskills 1866hz with corsair's 1600 ddr3 .. no issue..

Both pairs of your rams default cl same?

 

[hlots123]

hav u tried cleaning the rams' golden contact fingers (esp. the older pair) with soft eraser,
manually input 9-9-9-24-2 in bios,
up the dram voltage in smallest increment if fail...?

 

[superzheny]

Update your bios to the latest.

Set ram to 1333mhz 11,11,11,33,2t.

If still fail, install your ram as A-A-B-B