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Windows 7: I7 7700K RAM type question

6 Days Ago   #1
F22 Simpilot

Windows 7 Ultimate x64
 
 
I7 7700K RAM type question

I want to purchase an i7 7700K some time in the future. Looking here I see the compatible RAM type is: DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V

My RAM is 2666 MHz. Will this CPU even work in my system?

My RAM.





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6 Days Ago   #2
iko22

Windows 7 x64, Vista x64, 8.1 smartphone
 
 

You can underclock the RAM from 2666 MHz to either 2400 or 2133 MHz.

If the Motherboard detects incompatibility, then it will set RAM to 2133 MHz via XMP anyway.
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6 Days Ago   #3
F22 Simpilot

Windows 7 Ultimate x64
 
 

Okay, thanks. Sucks you can't have faster RAM than that. WTH!
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6 Days Ago   #4
iko22

Windows 7 x64, Vista x64, 8.1 smartphone
 
 

Some people would have success in overclocking the Processors Front Side Bus (FSB) on various processors.

However I found this article on that particular processor, where Intel advise overclocking an unlocked 7700K.

Quote:
The TL;DR version is that everything checks out on Intel's end and users should not overclocked their Core i7-7700K processors, which have unlocked multipliers specifically for overclocking.
Source: Intel tells core i7-7700k owners to stop overclocking to avoid high temps | PC Gamer

Happy Computing
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5 Days Ago   #5
F22 Simpilot

Windows 7 Ultimate x64
 
 

Well what a POS CPU. I mean it's a K sku FFS.

I can't go with something else because my motherboard is a 270 series Intel chipset. Unless a newer CPU can use a 270 series chipest. Certainly not replacing the motherboard. I just built this 2 years ago.
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5 Days Ago   #6
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

You could lower your CPU multiplier and then OC the FSB to get the increase in RAM speed. You don't have to lower the CPU multiplier by much. Just enough that you can get the RAM up to it's specified speed and get your CPU clock close to stock. I have done this with a couple of locked AMD rigs and it has worked well. No heat problems at all.


You may have to fiddle with your voltage settings for your Northbridge (or not), but I would think that would work for you without getting your temps too high, and you'll be able to run your CPU pretty close to stock speed with judicious use of the multiplier and the FSB clock.


My $0.02.
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5 Days Ago   #7
johnhoh

Win7 pro x64
 
 

Quote   Quote: Originally Posted by F22 Simpilot View Post
Well what a POS CPU. I mean it's a K sku FFS.

I can't go with something else because my motherboard is a 270 series Intel chipset. Unless a newer CPU can use a 270 series chipest. Certainly not replacing the motherboard. I just built this 2 years ago.
I have a 7700k running on a gigabyte z270n-wifi with corsair memory (CMK16GX4M2B3200C16). I just select XMP memory profile in bios to run it at 3200mhz. All other bios settings are default. Your board has the same option, give it a try.


Attached Thumbnails
I7 7700K RAM type question-1.png  
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4 Days Ago   #8
F22 Simpilot

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Mellon Head View Post
You may have to fiddle with your voltage settings for your Northbridge (

I could have swore I read that the Northbridge in Intel rigs were built into the CPU now a days. Maybe the Northbridge is an AMD thing or did I misread something? LOL
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4 Days Ago   #9
F22 Simpilot

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by johnhoh View Post
I have a 7700k running on a gigabyte z270n-wifi with corsair memory (CMK16GX4M2B3200C16). I just select XMP memory profile in bios to run it at 3200mhz. All other bios settings are default. Your board has the same option, give it a try.

That's interesting because Intel states the following speeds will only work: DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V

Under load and no load, what are your temps with CoreTemp? With my rig now it never goes above 50c it seems. And that's playing FSX or GTA V.
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4 Days Ago   #10
johnhoh

Win7 pro x64
 
 

Quote   Quote: Originally Posted by F22 Simpilot View Post
That's interesting because Intel states the following speeds will only work: DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V. Under load and no load, what are your temps with CoreTemp? With my rig now it never goes above 50c it seems. And that's playing FSX or GTA V.
Intel is not saying faster memory won't work, they're just saying the memory controller stock speed is 2133/2400. Assuming your dimms can handle the speed AND you have a Z board, much higher speeds are easily achievable even with no voltage increase, and 3200mhz is common choice. I'm at 1.35V @ 3200mhz.

My cooling is unusual. I do not know what my load temps are but idle at 35C and max out at 45C sometime during an average day. That's using a silent 80mm fan set at 7V and no case, the machine is open-air (my profile pic is my machine). If I ran coretemp my weak fan would produce a high-ish temp no doubt but it never comes to that.
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 I7 7700K RAM type question




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