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  4 gb @ 1066mhz or 5 gb @ 800mhz WHATS BETTER? 
 
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Joe Eissner Jan 08, 2011, 09:26am EST Reply - Quote - Report Abuse
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I have a Gigabyte motherboard ga-ma785gm-us2h with 4 memory slots. I have 2 x 2gb 1066mhz kingston memory and 2 x 512 1066mhz gskill memory. When i boot it will only boot at 800mhz. I tried to change in the bios but when i reboot I get the blue screen of death.
I read that perhaps only 2 of the slots will be recognized to run at 1066mhz ? Which leads me to my question. If i can indeed get it to run 4gb @ 1066mhz is this better than running what i currently have 5gb @ 800 mhz ??
Or if any one can tell me how to get all 5gb to run at 1066mhz without the blue screen of death that would be my optimal solution.
Thanks in advanced for anyone help, I am new to forums.:)


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john albrich Jan 08, 2011, 10:32am EST Reply - Quote - Report Abuse
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Edited: Jan 08, 2011, 10:38am EST

 
>> Re: 4 gb @ 1066mhz or 5 gb @ 800mhz WHATS BETTER?

4GB@1066MHz, assuming the timings are optimized appropriately for the memory modules.

However, it depends a lot on how you use your computer and what you use it for.

Windows Environment:
I'd run some standard benchmarks, and then run a few informal benchmarks using programs I routinely use.

If you routinely have a lot of programs running in the background, I'd also make sure they are running while performing benchmarks as that can affect pagefile usage, CPU core allocation, etc. Note that pagefile usage will also change depending on how much memory you have installed, so that can also affect overall system performance.

Also, each time you change configurations, remember to verify the "Dual-Channel" and/or "ganged" v. "unganged" mode settings. The setting(s) might get changed for some reason depending on your BIOS, and you want to be comparing at least more or less similar species of apples.


If you just want to look at base hardware comparisons (which is somewhat meaningless if you're normally running in Windows), then run standard memory tests like memtest86+ from a bootable non-Windows disc like UBCD, and time the iteration throughput rate under both configurations.


edit: added ref to dual-channel and ganged/unganged

mothow Jan 08, 2011, 11:08am EST Reply - Quote - Report Abuse
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>> Re: 4 gb @ 1066mhz or 5 gb @ 800mhz WHATS BETTER?
Id rather have 4gb in dual channel.5gb's is gonna limit your bandwidth with single channel.

ASRock Z97 Extreme 4 / i7 4790K / Corsair H80i / 4x4GB Crucial Ballistix Smart Tracer DDR3 1600 / 1TB Western Digital Caviar Black / 240GB Mushkin Chronos Deluxe SSD / 2x Evga GTX 670 FTW 2GB in SLI / Sound Blaster Recon3D Fatal1ty / Corsair HX1000w

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