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RAM mixing .

post #1 of 6
Thread Starter 
Hi

Just curious I have DDR 3 2200 Mhz 16 gigs CL 11 , and some more DDR 1600 CL 7 ,

I got 8gb 2200 CL 11 in two slots , and wonder what happens if I add , 2gb 1600 CL7 more in the

remaining slot .

at what speed will they then run? Can I overclock the two slower rams , and what about the timings ?

Or not mix them at all

Thanks so much

Ralph
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post #2 of 6
They'll run at the lower speed / timings of the lower frequency kit (or you'll have to set them as such).
Mixing RAM typically isn't recommended (matched pairs are), as it can cause issues with stability sometimes - some boards handle it fine, others wig out.
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post #3 of 6
Do you actually need the extra memory? (are you running out of memory) - if not, then I see no reason to add more and mix it. If you do need the extra memory, then you'll likely have to down clock the 2200Mhz memory to speeds that the 1600Mhz memory can achieve. I'm guessing that the 1600Mhz likely can't do significantly higher, though every memory module is different.
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post #4 of 6
I have run different brands and speeds of ram together. You will have to lower the 2200 ram down to 1600 and adjust your timings to the looser ram settings of 11 and it will work. You can lower your timings down from 11 but it will take some trial and error. the 1600 should overclock but again you will have to test to find out. Personally I would overclock the 1600 with timings of 11 and see how high it can go then install the 2200 ram at those settings and see if it works. thumb.gif
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post #5 of 6
Quote:
Originally Posted by honsbeek View Post

Hi

Just curious I have DDR 3 2200 Mhz 16 gigs CL 11 , and some more DDR 1600 CL 7 ,

I got 8gb 2200 CL 11 in two slots , and wonder what happens if I add , 2gb 1600 CL7 more in the

remaining slot .

at what speed will they then run? Can I overclock the two slower rams , and what about the timings ?

Or not mix them at all

Thanks so much

Ralph

All your questions: Yes

Recommanded: No

Your PC might even feel/be slower, just because all the "adaption" your setup has to do, to make them all "the same". Therefore same brand and freq and timings is best, ofcourse wink.gif
   
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post #6 of 6
Thread Starter 
THANKS for your feedback
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Intel Core i5 2500K ASUS P8P67 (B3) Sapphire Radeon HD5830 G.SKILL DDR3 4G PC3-12800 CL7 RIPJAWS RM 2GBx2ea 
Hard DriveCoolingOSMonitor
OCZ Vector 128mb / 1.5TB Barracuda Noctua Windows 7 Ultimate x64 Eizo Flexscan SX2762W 
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Eizo Foris FS2332  Topre Realforce 87u Heroichi HEC-COUGAR CM 700 80PLUS Bronze Coolermaster CM690 II Advanced 
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My System
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CPUMotherboardGraphicsRAM
Intel Core i5 2500K ASUS P8P67 (B3) Sapphire Radeon HD5830 G.SKILL DDR3 4G PC3-12800 CL7 RIPJAWS RM 2GBx2ea 
Hard DriveCoolingOSMonitor
OCZ Vector 128mb / 1.5TB Barracuda Noctua Windows 7 Ultimate x64 Eizo Flexscan SX2762W 
MonitorKeyboardPowerCase
Eizo Foris FS2332  Topre Realforce 87u Heroichi HEC-COUGAR CM 700 80PLUS Bronze Coolermaster CM690 II Advanced 
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Logitech G7 
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