DDR3 Ram Overclocking (help)

[Lollyly]

Hi everyone 

 

My Ram is rated at 1600mhz but I cant make her move away from 1333mhz. 

I tried with XMP profiles, raising the Clock and the multiplier, different timings with different clocks and different voltage but I cant make it to go faster than 1333Mhz.

The motherboard is rated for 1800Mhz so I have to be doing something wrong. 

 

Can someone tell me where am I making a mistake.

 

Base specs:

Motherboard- Foxconn P67A-S

Cpu- i5-2500k running on 4.6Ghz 4 cores 

Ram- 2x Samsung DDR3 1600 Ram 

Video card -GTX 1060 6GB

Storage- 1 TB hard drive and 128 GB SSD

 

My english is not perfect, so excuse me in advance.

 

Thanks!

[Srijan Verma]

https://www.techradar.com/news/computing-components/upgrades/how-to-overclock-your-ram-1030286

 

 

this might help you, You English is fine

[Jurrunio]

but what timings did you use on 1600MHz? I think minimum JEDEC spec is 11-11-11-28

[WereCat]

Your latency is 7-7-7-21, maybe your kit can't handle that at 1600MHz.

Try 9-9-9-24

[Lollyly]

17 minutes ago, Jurrunio said:

but what timings did you use on 1600MHz? I think minimum JEDEC spec is 11-11-11-28

I tried and it is still stuck on 1333Mhz :C

[Jurrunio]

Just now, Lollyly said:

I tried and it is still stuck on 1333Mhz :C

stuck as in it cannot post 1600MHz or the motherboard refuses to apply 1600MHz?

[Lollyly]

1 minute ago, Jurrunio said:

stuck as in it cannot post 1600MHz or the motherboard refuses to apply 1600MHz?

My pc boots, but at 1333Mhz ram speed 

[Jurrunio]

1 minute ago, Lollyly said:

My pc boots, but at 1333Mhz ram speed 

so it's refusing to apply.. Try reset CMOS, sometimes settings get stuck.

[Lollyly]

I reseted the CMOS and its still at 1333Mhz.

[GabeThePCHelper]

The i5-2500k does not support 1600.

https://ark.intel.com/content/www/us/en/ark/products/52210/intel-core-i5-2500k-processor-6m-cache-up-to-3-70-ghz.html

 

I could be wrong, I don't do much overclocking but I just explore the Intel ARK.

[Lollyly]

I've seen this spec sheet but I've seen so much people do 2133 Mhz with the same CPU too.

 

 

[Lollyly]

9 hours ago, Jurrunio said:

so it's refusing to apply.. Try reset CMOS, sometimes settings get stuck.

Can it be just a bad ram 

[Jurrunio]

28 minutes ago, Lollyly said:

Can it be just a bad ram 

a lot less likely than bad BIOS

[Lollyly]

59 minutes ago, Jurrunio said:

a lot less likely than bad BIOS

I can downgrade the bios but the latest bios gave me support for 3rd gen CPUs.

Is there any software that I can use to downgrade the bios or I should give the PC to a repair shop to do it for me.

[Jurrunio]

30 minutes ago, Lollyly said:

I can downgrade the bios but the latest bios gave me support for 3rd gen CPUs.

Is there any software that I can use to downgrade the bios or I should give the PC to a repair shop to do it for me.

downgrading the bios is the same work as updating it, you just flash an older bios revision instead of a newer one.

[Lollyly]

8 hours ago, Jurrunio said:

downgrading the bios is the same work as updating it, you just flash an older bios revision instead of a newer one.

 After I downgraded the bios it started to work. The only thing left for me is to find the best settings. 

 

Thank you !

[Berfs1]

On 4/9/2019 at 1:15 PM, WereCat said:

Your latency is 7-7-7-21, maybe your kit can't handle that at 1600MHz.

Try 9-9-9-24

More like the IMC cannot handle that, at the XMP provided voltage. Sandy Bridge and Ivy Bridge (LGA1155) IMCs are not nearly as strong as Haswell IMCs, which honestly would be capable of handling some normal DDR4 frequencies too if they implemented DDR4 support.

 

23 hours ago, GabeThePCHelper said:

The i5-2500k does not support 1600.

https://ark.intel.com/content/www/us/en/ark/products/52210/intel-core-i5-2500k-processor-6m-cache-up-to-3-70-ghz.html

 

I could be wrong, I don't do much overclocking but I just explore the Intel ARK.

While correctly speaking the 2500K does not SUPPORT 1600 MHz, it does not mean you cannot run that. It just means that without modifications, it will only run 1333 max. Provided the OP has a P67 motherboard, it supports overclocking by default. Provided that this board is most likely an OEM board, it MAY not have overclocking support.

 

Essentially, LGA1155 motherboards are not GUARANTEED to run 1600 MHz, but as long as you have a 7 series motherboard (B75, H77, Q75, Q77, Z75, Z77) AND an Ivy Bridge (excluding Celeron lineup) CPUs, AND with RAM kits that are rated at 1600 MHz or higher (higher but has a 1600 MHz SPD profile), you will be GUARANTEED to have 1600 MHz running (unless one or more core components are faulty).

 

Simply speaking, 1600 MHz will work under certain conditions for LGA1155 motherboards.

[Jurrunio]

3 minutes ago, Berfs1 said:

More like the IMC cannot handle that, at the XMP provided voltage. Sandy Bridge and Ivy Bridge (LGA1155) IMCs are not nearly as strong as Haswell IMCs, which honestly would be capable of handling some normal DDR4 frequencies too if they implemented DDR4 support.

Sand Bridge and Ivy Bridge IMCs arent nearly as weak as you think. The 16x multiplier giving 2133MHz limit on Sandy Bridge is way below its capabilities and these CPUs dont even need changing the SA and IO voltage to reach it. Ivy has a lot more multipliers and even 2666 is doable with appropriate tuning.

[Berfs1]

On 4/10/2019 at 2:08 PM, Jurrunio said:

Sand Bridge and Ivy Bridge IMCs arent nearly as weak as you think. The 16x multiplier giving 2133MHz limit on Sandy Bridge is way below its capabilities and these CPUs dont even need changing the SA and IO voltage to reach it. Ivy has a lot more multipliers and even 2666 is doable with appropriate tuning.

WeakER than Haswell. On Z87, there is a limit of 2933 MHz, you cannot go higher than that without adjusting BCLK. This limit is apparantly removed with Z97. I do have a question regarding Ivy Bridge however: do you know if there is a ram speed limit on Ivy Bridge platforms (specifically Z75 or Z77)?

[Jurrunio]

14 minutes ago, Berfs1 said:

WeakER than Haswell.

Good enough to do 1600MHz CL7, it's more limited by the memory sticks

 

14 minutes ago, Berfs1 said:

I do have a question regarding Ivy Bridge however: do you know if there is a ram speed limit on Ivy Bridge platforms (specifically Z75 or Z77)?

I think (by multiplier) it's 2800MHz? Though the 2666 multiplier is the last one with good enough stability for timings tuning. It's BCLK after that