PS3 Project RSX Boost: Overclock your Retail PS3 RSX Speeds (ps3 cfw only)

[SiegHart93]

If you can test Crysis HD (Crysis 1), it would be better than the duck test.
The beginning of the 4th mission is particularly good for testing.

Spoiler: This place

• Just stay still here, it's a safe place.
• Make sure your controller doesn't disconnect, or the pause menu will pop.
• Let your console reach at least 70°C, max 75. A 71°C target is enough.
• With water, explosions, smoke, sparkles, this place is great for stressing the GPU.
• If after a good hour you don't encounter artifacting or freezing, then your OC is stable !
• I can provide a save file if needed.
View attachment 43377

@SiegHart93
https://github.com/MitsuTM/PS3_CFW_...k/750_850_BETA9_PEX.pup_4.91.CEX-PS3UPDAT.zip

Thanks so much bro!!

 

[luhtoe]

hi, I was considering overclocking my fat cechl 65nm to 600/750 but I have heard that even a small OC is unstable on the fat units due to the NEC tokins and the increased heat generation. is it a good idea or should I keep it stock?

 

[richardjohn]

I'd have to retest myself. Maybe 8 to 12 more FPS. Can't wait for the voltage mod. To get my other PS3s to hit 950

If you can really change the voltage for PS 3, it is estimated that many GPUs will be able to run at 950 or even 1000

 

[Tanzu15]

If you can really change the voltage for PS 3, it is estimated that many GPUs will be able to run at 950 or even 1000

No not many. Some. The ones that can do 900 fully stable will be able to do 950. The safest highest voltage will always be the one that lets you squeeze out the extra 50 you couldn't handle without voltage. Adding enough voltage to do an extra 100 to 150, will surely be not recommended. Most people's PS3s can only do 700 core stable anyways. Only late lucky PS3s can even dream of doing 800 or 850 let alone 900.

 

[GunGame]

You're right, I didn't see it !
https://www.psdevwiki.com/ps3/CXD5300DGB


Because date codes aren't guarantees regarding the chip you'll get. Even the month of manufacture isn't an absolute guaranty.

The limits of your PS3 depends on your RSX model. Even in the 25XX series, you can have 4 different revisions :

• CXD5300A1GB : This one can do 700 on core easily, 750 if you're lucky. As for memory (VRAM), 900 or 925. Maybe 950 at best.

• CXD5300CGB : 800 on core stable, 850 freeze after some time in game. Up to 1000MHz on memory if you're lucky (stay cautious).

• CXD5300DGB : We don't know it well, the only report say 700/1000 stable max.

• CXD5300GGB : The greatest overclockers, 850 or 900 on core. 950 is EXTREMELY rare. Up to 1000MHz on memory.

Of course, there are always exceptions due to the silicon lottery.

While later date codes give you more chances to get a good chip, this is still a lottery (a triple lottery in fact. Month ? + Chip revision ? + Silicon lottery ?).

Thank you for your reply, and sorry for the late answer. I ended up opening and dissembling my PS3 Slim, and to my surprise, there were still a bit of thermal paste inside, so I needed to remove a bit of it in the RSX to make it more visible, and so I did. Now it's clear that my RSX model on my CECH-2504B PS3 Slim is CXD5300DGB, even though I don't know how to send a picture of it, I know from the text that it is that RSX model and this made it easier to understand that the PS3 Slim models can have different RSX models. Thanks.

 

[RIP-Felix]

I'd be careful about making any sort of predictions. It's very likely we will not achieve significant stability gains from core voltage increases. The VRAM didn't. Or maybe it will, who knows. Regardless, operating at higher voltage will increase heat and reduce stability on that front.

You can look at your LV1 RSX string to see what VID your 40nm is currently using. It appears that they started setting the core voltage per chip with the 40nm. Most 90 and 65nm had the same VID. Binned 90s used a lower voltage, explaining why they ran cooler. It may be that's what better silicon let's you do. Use less voltage without becoming unstable. I want to test that hypothesis by lowering the voltage on a regular bin 90nm and see if it becomes unstable. And if not, how much cooler it runs.

There may have been stability/reliability reasons for setting different voltages on each 40nm, but there appears be quite a variety in the voltages they were set to. Anywhere from 0.90 to 1.1v I'm seeing regularly. There are some outliers That make me question the accuracy of my VID table map, but these figures are ballpark for most 40s.

 

[Tanzu15]

I'd be careful about making any sort of predictions. It's very likely we will not achieve significant stability gains from core voltage increases. The VRAM didn't. Or maybe it will, who knows. Regardless, operating at higher voltage will increase heat and reduce stability on that front.

You can look at your LV1 RSX string to see what VID your 40nm is currently using. It appears that they started setting the core voltage per chip with the 40nm. Most 90 and 65nm had the same VID. Binned 90s used a lower voltage, explaining why they ran cooler. It may be that's what better silicon let's you do. Use less voltage without becoming unstable. I want to test that hypothesis by lowering the voltage on a regular bin 90nm and see if it becomes unstable. And if not, how much cooler it runs.

There may have been stability/reliability reasons for setting different voltages on each 40nm, but there appears be quite a variety in the voltages they were set to. Anywhere from 0.90 to 1.1v I'm seeing regularly. There are some outliers That make me question the accuracy of my VID table map, but these figures are ballpark for most 40s.

Well guess we will be either cooked or blessed. It's all up to you chief. You're our only hope. Literally.

 

[Yusuf Mantam]

Hello Friends, I Tried 750 850 Mhz Speeds on My Ps3 Model 2004a. It crashes before the update arrives. How can I fix? Can You Give Some Advice? E3 Flasher I don't know. What are your recommendations? I would be glad if you could help me. I Don't Want To Throw My PS3 In The Trash

 

[Mitsu™]

Hello Friends, I Tried 750 850 Mhz Speeds on My Ps3 Model 2004a. It crashes before the update arrives. How can I fix? Can You Give Some Advice? E3 Flasher I don't know. What are your recommendations? I would be glad if you could help me. I Don't Want To Throw My PS3 In The Trash

We have said many times that 750MHz core is too much for a 20XX :\
Max 700MHz if by luck the capacitors aren't to degraded.
Try to cool it down as much as possible (point a fan toward it or remove the upper shell, put it in a fridge for some minutes, etc...) and retry to update.
If you really can't update it that way, then you'll have no choice but to use a e3flasher to recover it (if you still have the dump you made when jailbreaking it ?).
I can't guide you through this process unfortunately, as I never had to use one myself but there are guides online.
Good luck !

 

[SiegHart93]

Thanks guys my PS3 Slim datacode 0D is running at a stable 800/950, i dont want to risk and push it over since i dont have a hardware flasher. Im really happy that finally i can run games smoothly. I cant even imagine what a ps3 super slim cech 43xxx 28nm can do if it gets someday to be overclocked.

 

[Mitsu™]

Thanks guys my PS3 Slim datacode 0D is running at a stable 800/950, i dont want to risk and push it over since i dont have a hardware flasher. Im really happy that finally i can run games smoothly. I cant even imagine what a ps3 super slim cech 43xxx 28nm can do if it gets someday to be overclocked.

That's great !
I'm very curious about these super slims too !

I will experiment this 850 core OC with a limit of 60°C to see if it freeze or not. I need to know how much heat play a role here.

Well, now I know !
With a limit of 60°C, 850MHz core is still super stable after 2 hours of Crysis ! Even with 1000MHz VRAM along !
While 850/650 and 850/900 froze at 70°C after ~30 minutes (if you're lucky. It can be less.).

So it further confirms that heat can greatly influence the stability of an overclock !
That said, I still don't think that a heat-dependent OC is usable 24/7.

I need to see if it can remain stable with a limit of 65°C.

I really hope that voltmod won't increase the temperatures too much, to the point of cancelling out the benefits of the process.
All of this is so exciting !

 

[Tanzu15]

That's great !
I'm very curious about these super slims too !


Well, now I know !
With a limit of 60°C, 850MHz core is still super stable after 2 hours of Crysis ! Even with 1000MHz VRAM along !
While 850/650 and 850/900 froze at 70°C after ~30 minutes (if you're lucky. It can be less.).
View attachment 43389
So it further confirms that heat can greatly influence the stability of an overclock !
That said, I still don't think that a heat-dependent OC is usable 24/7.

I need to see if it can remain stable with a limit of 65°C.

I really hope that voltmod won't increase the temperatures too much, to the point of cancelling out the benefits of the process.
All of this is so exciting !

45% fan speed at all times should keep your temps away from 70c. But if you feel 800 fully stable with no temp limit is the best choice then it's the best choice. I also do believe having a fully stable OC despite temps hitting 75c is best. I personally prefer my PS3s to be at a constant 45% fan speed and always keep below 68c at full gaming loads.

 

[RIP-Felix]

Hello Friends, I Tried 750 850 Mhz Speeds on My Ps3 Model 2004a. It crashes before the update arrives. How can I fix? Can You Give Some Advice? E3 Flasher I don't know. What are your recommendations? I would be glad if you could help me. I Don't Want To Throw My PS3 In The Trash

You can use UART to manually set the 1st fan step to 100% using the SYSCON fantables. That should make it stable enough to complete the update in safe mode. Alternatively, turn off the console and wait until it's completely cool. Open the top of the console and get a box fan blowing on it. Set AC down or perform in the garage on a cold day. update should complete then.

edit: Well, that's if you're lucky. I've had it happen twice now and both times setting fan to 100% allowed me to recover it.

 

[Tanzu15]

You can use UART to manually set the 1st fan step to 100% using the SYSCON fantables. That should make it stable enough to complete the update in safe mode. Alternatively, turn off the console and wait until it's completely cool. Open the top of the console and get a box fan blowing on it. Set AC down or perform in the garage on a cold day. update should complete then.

edit: Well, that's if you're lucky. I've had it happen twice now and both times setting fan to 100% allowed me to recover it.

Yup if you can enter recovery mode it's possible to easily recover it.

 

[fpoker102]

i m writing flash In my ps3 cech 2008B
e3 flasher is writed ps3 NOR successfully but after my ps3 display is not showing anything?
any suggestions what should I do now

 

[Mitsu™]

45% fan speed at all times should keep your temps away from 70c. But if you feel 800 fully stable with no temp limit is the best choice then it's the best choice. I also do believe having a fully stable OC despite temps hitting 75c is best. I personally prefer my PS3s to be at a constant 45% fan speed and always keep below 68c at full gaming loads.

In my case, 45% is even enough to maintain it at 60°C or below depending on the game.
A perfect balance between noise and cooling

 

[Mitsu™]

Ok, this is pure sorcery.
With 850MHz core being stable only under condition (temperature), I was afraid it wouldn't even boot.
And yet...

Obviously, I need to test it in game and I'm almost 100% sure that it won't be stable.
This is impossible.

EDIT : Okay, as I thought, it freeze in Crysis after less than 5 minutes. And it was still around 45°C. Zero artifacts though.

(Still my 2504A 0D/CXD5300CGB)

I know, I really played with fire trying this.
Honestly, don't do this. It's super dangerous.

 

[EumelEumel]

If you can test Crysis HD (Crysis 1), it would be better than the duck test.
The beginning of the 4th mission is particularly good for testing.

Spoiler: This place

• Just stay still here, it's a safe place.
• Make sure your controller doesn't disconnect, or the pause menu will pop.
• Let your console reach at least 70°C, max 75. A 71°C target is enough.
• With water, explosions, smoke, sparkles, this place is great for stressing the GPU.
• If after a good hour you don't encounter artifacting or freezing, then your OC is stable !
• I can provide a save file if needed.
View attachment 43377

@SiegHart93
https://github.com/MitsuTM/PS3_CFW_...k/750_850_BETA9_PEX.pup_4.91.CEX-PS3UPDAT.zip

(My MediaFire account is full btw.)

I'd like that savegame please

 

[Razmann4k]

Ok, this is pure sorcery.
With 850MHz core being stable only under condition (temperature), I was afraid it wouldn't even boot.
And yet...

Obviously, I need to test it in game and I'm almost 100% sure that it won't be stable.
This is impossible.

(Still my 2504A 0D/CXD5300CGB)
View attachment 43397
I know, I really played with fire trying this.
Honestly, don't do this. It's super dangerous.

Now imagine with no IHS and liquid nitrogen! 1200MHz Core lol, hell maybe 1500MHz with no load (no games just XMB)!

 

[Mitsu™]

I'd like that savegame please

I don't know which version of the game you have, so :
US :
https://www.mediafire.com/file/lr6raa0aopo4cgf/NPUB30302C2SAVEENCBIN16.zip/file
EU :
https://www.mediafire.com/file/q604bdf7n3h1x0r/NPEB00575C2SAVEENCBIN16.zip/file

Now imagine with no IHS and liquid nitrogen! 1200MHz Core lol, hell maybe 1500MHz with no load (no games just XMB)!

Even with that, you will likely hit the limits of the GPU well before 1200MHz.
But 1000MHz... why not