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More Mem Less OC ?

post #1 of 4
Thread Starter 
I read this about a few months ago online can't remember the site about having more memory can limit overlclocking is this true? For example if I have 12GB of memory I will get less overclocking ? but in what way I thought memory has nothing to do with the overlclocking of a cpu it's how good your cpu is and if it can overlclock better on low voltages.
post #2 of 4
From what i've seen on 1st gen i7s, yes, its true. I used to be able to get my i7 920 (other rig) to around 4.2ghz, but by adding 6gb of ram (total of 12) I couldnt get past 3.6ghz with the same voltages.
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post #3 of 4
I had trouble OCing my 980, reduced Ram to 8gb (2x4gb) temporarily. Not any better still needed more IMC voltage. Couldn't even bump memory OC by itself. Maybe even lower amounts of memory would have made a difference but kind of gets silly. I think it becomes more of an issue when filling all DIMM slots?
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post #4 of 4
CPU core overclock should not be affected. However, you may need to adjust timings, QPI/VTT voltage, or reduce uncore clock on to stabilize the extra memory.
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CPUMotherboardGraphicsRAM
5820K @ 4.3/3.6GHz core/uncore, 1.225/1.2v Gigabyte X99 SOC Champion (F22n) 2x Sapphire R9 290X Tri-X OC New Edition (10036... 4x4GiB Crucial @ 2667, 12-11-12-27-T1, 1.37v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.05) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Cooler Master Nepton 280L 
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Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
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CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Reference R9 290X w/Stilt's MLU 1000e / 1375m E... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
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Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
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