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Overclocking I5-750 -- What RAM should I buy?

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March 15, 2010 8:11:34 PM

Hello!
I want to overclock I5-750 to 3,6 Ghz or 3,8 Ghz.

I am planning to buy this system:
I5 750
Edit: Gigabyte GA-P55-UD3, P55, Socket-1156
Cooling: Noctua NH-U12P SE2
4GB DDR3-ram

Question:
Does it matter if I buy 1066 Mhz-ram, 1333Mhz-ram, or 1600Mhz-ram, etcetera..?
Advantages? Disadvantages?

Thanks in advance!

Anders Branderud
My blog
March 15, 2010 8:24:55 PM

andersbranderud said:
Hello!
I want to overclock I5-750 to 3,6 Ghz or 3,8 Ghz.

I am planning to buy this system:
I5 750
Motherboard: Gigabyte GA-965P-DS3, socket 775
Cooling: Noctua NH-U12P SE2
4GB DDR3-ram

Question:
Does it matter if I buy 1066 Mhz-ram, 1333Mhz-ram, or 1600Mhz-ram, etcetera..?
Advantages? Disadvantages?

Thanks in advance!

Anders Branderud
My blog


You might want to do some more research on motherboard because the Intel i5 750 is not compatible with that mobo.
That motherboard is a 775 socket and the Intel i5 750 is a 1156 socket.
Try this motherboard Gigabyte GA-P55 USB3 for only $119.99 and it compatible with the Intel i5 750.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128425

I would recommended 1333MHz or 1600MHz.
1066 Not so really in a gamer's mind if you would like faster performance
But make sure that your motherboard can support 1333 and 1600 Ram and check the Ram List of that Motherboard to see if
the Ram that you are going to choose is compatible. (Do some good research before buying)
Looking for 1333 Ram, I would say look for Low Cas like 7-7-7-24
But with 1600 I do believe that it would be more like 8-8-8-20 or 8-8-8-24.

I hope this helps a little but wait until you get more replies here.
There are some very smart people on this forum so don't just take my word for it.
Make sure my information adds up to the right answer that you are looking for by reading other's replies.
If other's information sounds about the same as mine information then we are on the right track.

Good luck
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March 15, 2010 9:03:57 PM

Thanks for your advices! I appreciate that!

You wrote:
Quote:
You might want to do some more research on motherboard because the Intel i5 750 is not compatible with that mobo.


Yes, I am sorry, that was a typo. I search my e-mail to find the motherboard that I had bought, and by mistake I copied the title of a motherboard I bought a long time ago.


What I meant to ask, but I see that I was unclear, is if that buying memories, for example 1333 mhz-memories, decreases the ability to overclock the processor (without raising the voltage too much), compared to for example 1600 mhz-memories.

I don't want to raise the voltage higher than the recommended maximum level, because that it reduces the life span of the processor.

All the best!,

Anders Branderud
My blog
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March 15, 2010 9:24:15 PM

andersbranderud said:
Thanks for your advices! I appreciate that!

You wrote:
Quote:
You might want to do some more research on motherboard because the Intel i5 750 is not compatible with that mobo.


Yes, I am sorry, that was a typo. I search my e-mail to find the motherboard that I had bought, and by mistake I copied the title of a motherboard I bought a long time ago.


What I meant to ask, but I see that I was unclear, is if that buying memories, for example 1333 mhz-memories, decreases the ability to overclock the processor (without raising the voltage too much), compared to for example 1600 mhz-memories.

I don't want to raise the voltage higher than the recommended maximum level, because that it reduces the life span of the processor.

All the best!,

Anders Branderud
My blog


Now let say you do buy some 1333 (High Performance and Gaming Ram) It's not going to decrease the ability to overclock the Processor
Now let say you do buy 1600 High Performance and Gaming Ram) It's not going to decrease the ability to overclock the Processor.

1333 and 1600 are difference in spec's
I have Cruical Ballistix Tracer 1333MHz Ram and I've overclock it to 1400MHz at voltage setting is 1.560V from 1.500V
But it had overclock my Cas timing settings to 10-10-10-26 and I've manual set them back to 8-8-8-24)

1600 would give you a increase in performance by 13% I'd believe and I might just be wrong about the information.
Note when overclocking the Ram, you might want to set the Cas settings Manual to default timing. (sample 8-8-8-24 if it say 10-10-10-27 on CPU-Z or 9-9-9-24)

Please check the Overclocking Memory Topic for more information
I Hope I've clear things up with you.

Make sure when overclocking CPU and RAM , Run Prime95 for more than 8 hours overnight
The best results. I have done so for 20 Hours.

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a b à CPUs
a b K Overclocking
March 15, 2010 9:27:52 PM

Please don't say 'memories', its just 'memory'.

When overclocking on the new platform there are lots of multipliers to choose from, so it's not as big of an issue as it once was. So it shouldn't limit your overclock.

From the benchmarks I've seen, RAM speed didn't make a huge difference. So I just went with 1333 CL7. CPU is running 3.6Ghz at stock voltages. But I might replace with 2000 CL9 or 1600 CL8 later and see if I notice an increase.

Most important thing with the RAM, make sure it runs full speed at 1.65V or less!
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March 15, 2010 9:40:54 PM

Keiki646, Thanks again for your input!
Quote:
"1600 would give you a increase in performance by 13% I'd believe and I might just be wrong about the information. "


I agree with SpidersWeb on what he wrote about benchmarks on ram and performance improvement.

SpidersWeb wrote:
Quote:
Please don't say 'memories', its just 'memory'.

When overclocking on the new platform there are lots of multipliers to choose from, so it's not as big of an issue as it once was. So it shouldn't limit your overclock.

From the benchmarks I've seen, RAM speed didn't make a huge difference. So I just went with 1333 CL7. CPU is running 3.6Ghz at stock voltages. But I might replace with 2000 CL9 or 1600 CL8 later and see if I notice an increase.

Most important thing with the RAM, make sure it runs full speed at 1.65V or less!


Thanks for your input!
What is the temperature of that system (idle, normal and max)?
What cooling fan are you using?

Anders Branderud
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March 15, 2010 10:23:35 PM

andersbranderud said:
Keiki646, Thanks again for your input!
Quote:
"1600 would give you a increase in performance by 13% I'd believe and I might just be wrong about the information. "


I agree with SpidersWeb on what he wrote about benchmarks on ram and performance improvement.

SpidersWeb wrote:
Quote:
Please don't say 'memories', its just 'memory'.

When overclocking on the new platform there are lots of multipliers to choose from, so it's not as big of an issue as it once was. So it shouldn't limit your overclock.

From the benchmarks I've seen, RAM speed didn't make a huge difference. So I just went with 1333 CL7. CPU is running 3.6Ghz at stock voltages. But I might replace with 2000 CL9 or 1600 CL8 later and see if I notice an increase.

Most important thing with the RAM, make sure it runs full speed at 1.65V or less!


Thanks for your input!
What is the temperature of that system (idle, normal and max)?
What cooling fan are you using?

Anders Branderud

Like to add my temps on my system

Save O.C Profile1 @ 3657.07Ghz with Voltage 1.200V
Temps are at Idle
Core#0 - 33
Core#1 - 28
Core#2 - 30
Core#3 - 32

Temps at full Load
Core#0 - 47
Core#1 - 45
Core#2 - 46
Core#3 - 45

Prime95 temps at 100% load were 60, 55, 57, 61

I have 3 O.C profiles save so i can switch to either one (all have been tested with Prime95 and memtest86)

This one is my Current @4.0Ghz at voltage setting at 1.310V (Save O.C Profile 2)

Temps at Idle is
Core#0 - 36
Core#1 - 34
Core#2 - 34
Core#3 - 36

Full Load Temps
Core#0 - 55
Core#1 - 53
Core#2 - 54
Core#3 - 57

Prime95 temps at 100% load were 82,81,77,84

Use an Zalman 9700 (Pure Copper)
Intel i5 750 Quad
Using Dominator Memory Cooler for my Crucial Ballistix Tracers 8GB 1333 @1400Mhz 8-8-8-24
Windows 7 Ultimate
ATI 5850
Gigabyte GA P55 USB3
The case is a AZZA solano Full Tower with two 230mm fans one intake air and the other exhaust air and two 140mm front fans that intake air and 140mm back exhaust air
Two addition 120mm fan to intake air

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March 15, 2010 10:38:12 PM

Using a Xigmatech S1283.
Idle on cores is high 30's low 40's.
Normal load (like a game) makes a max of around 65. (3.6Ghz)
Prime 95 gets it in to the low 70's sometimes peaking to the high 70's.

Not really ideal, because I wanted to run @ 4Ghz, will likely try a Megahalems cooler, and if that doesn't keep me happy, building a water cooling setup. For the meantime it's fine though. I know lots of people are happy hitting the 80's, but I prefer to keep temps lower than that.

I've also turned hyper threading off, like the memory it doesn't have a huge impact and saved me roughly 5C on the cores temp wise.

Edit: should add, I'm using the i7 930, which makes serious heat. Judging by the above post, I should've gone i5 too lol
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March 16, 2010 10:54:40 PM

andersbranderud said:
Thanks!

Any input on these (if there will be any limitations with overclocking) ?: http://cgi.ebay.co.uk/4GB-4x-1GB-PC3-10600-DDR3-1333MHZ...

Voltage is 1,5 V.

Anders Branderud


Look for RAM that has heatspreaders and look for Brand Name Ram Retailers.
But that ebay add is Generic brand RAM.

Here is on http://cgi.ebay.co.uk/OCZ-Gold-DDR3-4GB-2x2GB-PC3-10666-1333MHz-1-65V-New_W0QQitemZ330412016744QQcmdZViewItemQQptZUK_Computing_ComputerComponents_MemoryRAM_JN?hash=item4cee174468#ht_1561wt_1165

Here is a cooler to help cool better
http://cgi.ebay.co.uk/New-OCZ-XTC-DDR1-DDR2-DDR3-Memory-Cooler-OCZTXTCC_W0QQitemZ250577658855QQcmdZViewItemQQptZComputing_ComputerComponents_Fans_Heatsinks_SR?hash=item3a5797a3e7#ht_1272wt_939
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March 17, 2010 8:04:08 PM

andersbranderud said:
Hello!
Question:
Does it matter if I buy 1066 Mhz-ram, 1333Mhz-ram, or 1600Mhz-ram, etcetera..?
Advantages? Disadvantages?

Anders Branderud
My blog

It matters if you are using for Professional or Production usage (in my case). I've built many workstations run by 1600 MHz 4 x 2 GB CORSAIR DOMINATOR.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

That time I bought for around $128 per 4 GB (total RAM ordered was 184 GB!) but unfortunately now Newegg sells the same product at $147. That's too bad :non: 

If you are a casual PC user then you may stick with 1333 MHz Crucial memory (check Tom's article, don't have that bookmark on this laptop). Good luck :) 
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