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Question about RAM and Haswell upgrade.

post #1 of 4
Thread Starter 
Hi,

I've been searching a while for an answer but I can't get it real clear. If I wanted to upgrade a new motherboard (Gigabyte Z87X-UD3H) and a i5 4770K, is it wise to keep the 1600mhz Corsair Vengeance RAM or is it wiser to upgrade to a higher speed?

I'm planning on overclocking the CPU to around 4.4 Ghz or something (haven't really studied overclocking on Haswell yet).
post #2 of 4
For gaming there is little need to get faster ram. Overclock it if you can, but with prices now don't buy.
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RPI Compy
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Sister's rig
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Family HTPC
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CPUMotherboardGraphicsRAM
5820k MSI X99S MPOWER GTX 980 Ti 8x4gb 3000 MHz Crucial DDR4 
Hard DriveCoolingOSMonitor
Samsung 950 Pro Custom WC loop 480mm & 560mm Windows 10 ROG SWIFT 
KeyboardPowerCaseMouse
CM Quickfire TK Greens Corsair RM1000w Custom 3d-printed case Steelseries Rival 
Mouse PadAudio
CSGO Steelseries Creative Aurvana Live! 2 
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Amd FX 8320 Asus sabertooth 990FX Nvidia GTX 760 4GB g.skill ares 12GB 
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post #3 of 4
First off, overclockig on Haswell is a bit of a lottery due to the built in VRM components, I've heard of folks happily OCing to 4.7 and others that hit a wall at any voltage around 4.3. As to your RAM question, CL8 1600mhz isn't too bad so that might be just fine for your new rig. With a bit of voltage and perhaps some relaxing of timings you should be able to reach 1866+ with that RAM. Keep in mind that you won't see much in the way of benefit from doing so, as RAM has been bottle-necked at the IMC for some time now. You'll find countless articles showing only marginal improvement from say 1333 to 2133! OCing the RAM also commonly has the downside of making your CPU OC less stable. You might be perfectly happy with slightly slower RAM (which doesn't have a real impact on performance) for a few 100MHz on the CPU (which would be a bit more useful). As always, we're playing the silicon lottery here so your mileage may vary. Haswell can handle memory speeds around 2400 at full CPU OC if you get lucky. Maybe take the savings from buying new ram and invest in a better CPU cooler, you'll need it.
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Samsung 840 Pro SSD ASUS CD/DVDR combo Noctua NH-D14 SE2011 Windows 7 Ult, Ubuntu 13.10 (on SSD), Proxmox ... 
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Samsung SyncMaster SA550 (27in @ 1080p / 60hz) Corsair K60 OCZ ZX 850w Fully Modular (80+ Gold) Corsair C70 
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R.A.T. 7 
CPUMotherboardGraphicsRAM
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Seagate Barracuda ST3000DM001 Asus DRW-24B1ST/BLK/B/AS Cooler Master GeminII S524 SilenX EFX-08-12 
OSMonitorKeyboardPower
Ubuntu 12.04 Cheap little 32in Insignia w/ LED backlight Logitech K260 500w OCZ Modular 80+ 
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post #4 of 4
Thread Starter 
Ah ok thx for the replies. I thought it was required to have higher speeds for a better overclock, like it was with my i5 760. I believe you would have a more stable system with Baseclock 400mhz.

I've read some overclock guides on the Haswell and it seems much different from what I have right now. I have been out of the scene for a while now.

EDIT: better CPU cooler required? why? mine runs perfectly fine on my i5 760 at 4 ghz?
Edited by ricklen - 10/14/13 at 12:58pm
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