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OC i5-12400

Joined
Feb 22, 2016
Messages
2,388 (0.70/day)
Processor Intel i5 8400
Motherboard Asus Prime H370M-Plus/CSM
Cooling Scythe Big Shuriken & Noctua NF-A15 HS-PWM chromax.black.swap
Memory 8GB Crucial Ballistix Sport LT DDR4-2400
Video Card(s) ROG-STRIX-GTX1060-O6G-GAMING
Storage 1TB 980 Pro
Display(s) Samsung UN55KU6300F
Case Cooler Master MasterCase Pro 3
Power Supply Super Flower Leadex III 750w
Software W11 Pro
I'm revisiting the option to effectively OC i5-12400.
Have a few questions for those aware of the general operating parameters and conditions required.

- Do you need a 600 series mobo or will 700 still work - B or Z board a key element
- Compared to especially 9600X how large of a single core performance delta can be expected
- Is DDR4 or DDR5 a factor in optimizing memory performance that plays a large part in overall effect
- What sort of power usage/ heat increase accompanies this type of setup
- Any other considerations that have come to light
 
Any board you look for must have an external clock generator.

Only certain boards such as Asus ROG Strix B660-G / B660-F. There are a couple motherboards from MSI Gigabyte too probably, but I don't know them off my head. There may be some Z series boards that do not come with external clock generators. So lower end models, do your research before purchase just in case.

DDR5 is definitely worth factoring in. This is good performance boost on Intel chips.

Not sure what you mean by single core Delta. If you overclock this cpu, you do it all cores synced. I found the stock cooler that came with 12400F (not sure if it's the exact same as 12400) would support an all core overclock up to but rarely exceeding 4.6ghz. Which is pretty decent. Past this a decent AIO would be recommended and aim for 5.0 to 5.2ghz depending on silicon lottery.

Power and usage depends on your own testing. The higher the overclock, the more power is required to sustain stability.

System Agent voltage is locked on this cpu. You will have good experience up to DDR5 6000mhz. Good samples may sustain up to 6400mhz memory frequency.

Hope this helps
 
There are a couple motherboards from MSI Gigabyte too probably,
MSI MEG Z690I Unify (UEFI: E7D29IMS.111 and E7D29IMS.122);
MSI MEG Z690 Unify-X (UEFI: A22TC for C0; A22TH for H0);
ASUS ROG Maximus Z690 Formula (UEFI: 0811);
ASUS ROG Maximus Z690 Extreme (UEFI: 0811);
ASUS ROG Maximus Z690 (UEFI: 0811 and 1003);
ASUS ROG Maximus Z690 Apex (UEFI: 0811 and 0072);
ASUS ROG Strix B660-G Gaming WIFI (UEFI: 1003);
ASUS ROG Strix B660-F Gaming WIFI (UEFI: 1003);
Gigabyte Aorus Z690 Tachyon (UEFI: X2i);
ASRock Z690 Aqua OC (UEFI: 4.05.BC10)
ASRock B660M PG Riptide
MSI B660m Mortar MAX

Every single motherboard on this list is fairly expensive and if you can have a mobo that has all the bells'n'whistles you need for much cheaper but it doesn't have this kind of OC doncha worry, saved money can be invested into a better CPU which makes this overclocking moot. You're also limited to very old BIOS versions which might prove very problematic in specific cases.

DDR4 can't go beyond 3500...3700 MHz on non-K CPUs because you can't dial enough voltage into them for it to work properly. No matter the BCLK speed.

DDR5... no idea but going faster than 6000 MT/s CL30 doesn't make much sense, you'll waste energy rather than anything else.

Heat-wise, expect it to be impossible to cool with a box cooler once beyond 4600 Mhz and impossible to get away with a Gammaxx 400-alike once beyond 5 GHz.

I'd also expect very subtle difference between 9600X and this CPU once clocked to ~5200 MHz (NOT A GIVEN! NOT ALL 12400S CAN DO THAT!).

All in all, it's more proof-of-concept than anything else. Isn't worth it from the pragmatic standpoint. Way easier and more reliable to get a random good enough mobo and slot an i7 into that.

BUT IF YOU WANNA EXPERIMENT THEN WHO AM I TO SAY "NO" TO YOU?
 
MSI MEG Z690I Unify (UEFI: E7D29IMS.111 and E7D29IMS.122);
MSI MEG Z690 Unify-X (UEFI: A22TC for C0; A22TH for H0);
ASUS ROG Maximus Z690 Formula (UEFI: 0811);
ASUS ROG Maximus Z690 Extreme (UEFI: 0811);
ASUS ROG Maximus Z690 (UEFI: 0811 and 1003);
ASUS ROG Maximus Z690 Apex (UEFI: 0811 and 0072);
ASUS ROG Strix B660-G Gaming WIFI (UEFI: 1003);
ASUS ROG Strix B660-F Gaming WIFI (UEFI: 1003);
Gigabyte Aorus Z690 Tachyon (UEFI: X2i);
ASRock Z690 Aqua OC (UEFI: 4.05.BC10)
ASRock B660M PG Riptide
MSI B660m Mortar MAX

Every single motherboard on this list is fairly expensive and if you can have a mobo that has all the bells'n'whistles you need for much cheaper but it doesn't have this kind of OC doncha worry, saved money can be invested into a better CPU which makes this overclocking moot. You're also limited to very old BIOS versions which might prove very problematic in specific cases.

DDR4 can't go beyond 3500...3700 MHz on non-K CPUs because you can't dial enough voltage into them for it to work properly. No matter the BCLK speed.

DDR5... no idea but going faster than 6000 MT/s CL30 doesn't make much sense, you'll waste energy rather than anything else.

Heat-wise, expect it to be impossible to cool with a box cooler once beyond 4600 Mhz and impossible to get away with a Gammaxx 400-alike once beyond 5 GHz.

I'd also expect very subtle difference between 9600X and this CPU once clocked to ~5200 MHz (NOT A GIVEN! NOT ALL 12400S CAN DO THAT!).

All in all, it's more proof-of-concept than anything else. Isn't worth it from the pragmatic standpoint. Way easier and more reliable to get a random good enough mobo and slot an i7 into that.

BUT IF YOU WANNA EXPERIMENT THEN WHO AM I TO SAY "NO" TO YOU?
14700K runs fine in Asus B660-G with an appropriate bios. I have 2x of this board. :)
 
Learned of this option reading the comments in a recent review of 9600X. When no response came I didn't any ever would.


Obviously had been looking at 9600X or something else a bit upmarket from now four gens old base level cpu. Not fully sold on AMD/RTX pairing and would rather get something with e-cores if I go Intel route. Wait until the 10th is about all I can do.

Retail options for mobo on that list are pretty much nonexistent or going for well above MSRP. Had slim hopes of walking in to local shop and getting what I needed anyways. Figured it was worth asking here instead of sorting through misinformed opinions other places.
 
AMD/RTX pairing
Don't see a problem if the price is right. With 9600X, however, hard to say so.

No idea what you're trying to achieve but if gaming is top priority then it's either 13600K + reasonably fast DDR4 if you don't wanna overspend or 7800X3D + reasonably fast DDR5 if you wanna go all-in and get the best gaming performance overall*.
*14900K and some other Intel CPUs dispatch a very limited list of games better despite having none of that 3D cache.
If gaming is give or take moot then i9-12900 or i7-13700 series might prove the most efficient solution.

12400 OC remains strictly academical and experimental so unless you'd buy a suitable motherboard nonetheless you should treat it like an experiment.
 
Even as a failed experiment it would push the ball down the road past a few retail holidays. With benefit of a worthwhile sized upgrade - that had all the corners pretty deeply trimmed. Not pretty but livable.
 
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