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Ram Bottleneck?
- Thread starter Midnite8
- Start date
) but was wondering if my RAM would bottleneck my OC?
- Joined
- Oct 13, 2004
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- 14,002
not really... But you should plan the upgrade...
Since you're getting an unlocked CPU, the RAM will have absolutely no bearing on being able to overclock to 4.5ghz--it's all in the CPU multiplier.
- Joined
- Jul 27, 2006
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- 9,484
I actually have the same board and processor, awesome combo. 1333Mhz is on the low-end of the spectrum and you're going to take a performance hit with it. How much will just depend on what app/game you're running. Personally I'd go with something in the 1866-2400 range (you'll get diminishing returns due latency/price beyond that).
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- Feb 11, 2013
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did you know what the hell are you talking about?... as stated above it will affect nothing else but RAM benchmar, adding it also affect the iGPU performance, nothing more than that..
Actually JEDEC Standard its still 1333MHZ, thats why if you install a new RAM and do not enter in BIOS to change settings it will be automatically selected as 1333mhz, anything above that its considered a "Factory Overclocked" RAM..
If the kit its good, you may be able to work at 1600mhz with the 4770K, I build for my cousin a system with a 4670K and a sabertooth Z87 with a oldie Corsair 1333mhz Kit that was able to run at 1600mhz CL9 without issues..
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- Oct 13, 2004
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I was going to mention that too. OP have you tried running the RAM at 1600?
In fact its been a while, how is the OCing going?
In fact its been a while, how is the OCing going?
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- Oct 13, 2004
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definitely keep it...
Yep,
definitely keep it.
ANY program that is RAM intensive will see gains from the faster RAM.
HOODedDutchman
Gawd
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- Sep 16, 2012
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- 827
Good luck getting 4.5 out of the hottest cpu ever. Better get ready to delid.
I'm afraid I do princess. 1333mhz is slowest memory that intel recommends for the processor. He's buying a high end motherboard and an unlocked cpu, why would he want to pair that with the slowest memory available? (unless its temporary of course). That is the definition of a bottleneck.
- Joined
- Feb 4, 2003
- Messages
- 2,838
Totally WRONG. Sorry.
With Haswell, when you start to really push it, the RAM speeds can and will hold back your CPU core overclock. Read guides on Haswell overclocking, it's well documented. Stock clocked Haswell on an Asus Hero will hold 2666mhz by design. But overclock the CPU and it's down to the silicon integrity of the IMC as to whether or not it'll hold that higher ram speed.
Also, please be aware that, technically speaking, ANYTHING over 1600mhz is 'overclocking' and not officially supported by Intel.
As an example, with my Kingston 2666mhz ram, I can only run it at 2500mhz (through alot of tweaking/fiddling) whilst at 4.8ghz on the cpu (4.7ghz cache/imc).
In that case, please post a link where it explains how RAM speed in any way has an impact on being able to overclock with the CPU multiplier (not talking about using the bclk).
Last edited:
HOODedDutchman
Gawd
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- Sep 16, 2012
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http://www.anandtech.com/show/7364/memory-scaling-on-haswell/8
1333 WILL bottleneck a system. How much depends on the system and the program but if you look at that link it's up to 30%. 1600mhz should be the absolute minimum standard nowadays. 1866mhz+ is optimum. Even lose timing 2133 ram performs better than tight timing 1600 in most cases. Considering the difference in price now (mine was literally the exact same price as 1866 cas9) you'd be crazy to not grab something fast.
1333 WILL bottleneck a system. How much depends on the system and the program but if you look at that link it's up to 30%. 1600mhz should be the absolute minimum standard nowadays. 1866mhz+ is optimum. Even lose timing 2133 ram performs better than tight timing 1600 in most cases. Considering the difference in price now (mine was literally the exact same price as 1866 cas9) you'd be crazy to not grab something fast.
Those memory benchmarks identify RAM bottlenecks in an absolute sense across different speeds. They don't have anything to do with CPU overclocking. That's what the OP was asking about--whether their choice in RAM will prevent them from reaching 4.5GHz (with an unlocked CPU). Of course in benchmarks involving memory, you'll see a difference between 1333 and 1600 and 1866. But that's not what they were asking. I'm not saying that they should use 1333 RAM. I'm saying that it will have no impact on being able to OC an unlocked CPU. Temperatures might. Native RAM module speed won't when you're using the CPU multiplier.