Tuesday, July 23rd 2019
CCX Overclocking Tool for AMD CPUs Updated With New Features
Today an overclocking utility for AMD Ryzen CPUs called "Work Tool" has been updated with new features. The tool enables per-CCX overclocking, which is said to enable additional overclocking performance if one CCX is more capable than the other, so the whole CPU doesn't have to run at the speed of a slower CCX to be stable. The tool has been released by user shamino1978 on Overclock.net forums.
The reason for overclocking Ryzen CPUs on per CCX basis is because if you want to overclock a single core inside a CCX, the second core must run at a 1 GHz difference, meaning that if one core is OC'd to 4.5 GHz, the second core must run at 3.5 GHz. Such design is to be blamed on CPU's internal clock divider. However, you can use the Work Tool to do individual CCX overclocking and gain additional performance. Additionally, the tool has been updated to support tweaking of voltage aka VID. There are two versions of the tool, one which is smaller and has less features and one which can tweak the voltages. The smaller version is available here, while the bigger, more capable version is available here.
Source:
r/AMD
The reason for overclocking Ryzen CPUs on per CCX basis is because if you want to overclock a single core inside a CCX, the second core must run at a 1 GHz difference, meaning that if one core is OC'd to 4.5 GHz, the second core must run at 3.5 GHz. Such design is to be blamed on CPU's internal clock divider. However, you can use the Work Tool to do individual CCX overclocking and gain additional performance. Additionally, the tool has been updated to support tweaking of voltage aka VID. There are two versions of the tool, one which is smaller and has less features and one which can tweak the voltages. The smaller version is available here, while the bigger, more capable version is available here.
64 Comments on CCX Overclocking Tool for AMD CPUs Updated With New Features
oh wait,there was some agesa fail,but that was quickly pulled.
I would be supplying the same voltage across the cores it seems, so wouldn't it be up to cooling to handle the overclock? I'm just not understanding how this overclocking tool could do something to burn out a CPU any more than normal overclocking with raising the multiplier. Sure, if a crazy voltage spike in excess of 2v hit the cores, that might do it. My experience has been that heat is the main concern. It sounds like the CCX tool isn't doing anything special to voltage, just grouping cores by CCX. Some modules will bin higher within the same CPU. Setting the voltage manually and being careful with LLC should keep the voltage safe right?
I'm genuinely asking though since there's a lot on an engineering level I don't understand.
Intel has been on the same process node for quite some time. In spite of this, AMD is nearly matching single core performance at a lower frequency. Ryzen will probably need a couple more years to mature enough to push the 5GHz boundary. Maybe by then, Intel will have the new architecture and process node to give a solid leap at performance, which I look forward to. In the end, it's price and performance. Personally, I'm super happy to have an option like the 3600. Great price and a super versatile chip for gaming and workloads. :)
5Ghz has no meaning if it does not actually improve performance. Yes AMD might bet at 4.2 but that is almost as fast as Intel's 5Ghz.
Actually Intel tried this with their Pentium 4 era. Going for massive clock speeds instead of per clock cycle performance. By all account's it was a massive failiure just like Bulldozer.
3900X is on average only 5% slower than 9900K in games. Even when BOTH are overclocked. In edge cases 9900K migh be 20% faster but those are rare.
Why would i take a CPU that is 5% faster in one task and loses 30-50% in other tasks, has no platform upgrade path, has more severe security issues but costs the same?
Intel has done nothing but sandbag the last decade now they're dragging their feet plus they left their arch unsecure thinking it would go unnoticed. Plus costs a ridiculous amount of money
So yeah you could overclock a CCX or independent core, but at the cost of something else. If your going to bypass the FIT it takes one bad run on any heavy workload and your killing your CPU. These chips are not FX´s that eat 1.55 to 1.65v on water all day. These are chips with a much thinner internal wiring that a bit of current would simply pop that wiring.
This is why you dont see a all core 4.3GHz boost on a 2700x for example, when running IBT, but a more conservative 4.1GHz all core boost (when cooling is proper). This is just FIT limits while respecting the silicon limits.
Nobody on the net done a proper research except for the stilth related to FIT and what it is exactly. In a technical discussion on anandtech he wrote a few lines on the FIT on AMD cpu´s. If you wanna risk blowing your CPU be sure to use that above tool. Because FIT is being thinkered into something else just like a resistor on a temperature sensor that is mislead different. You can get very strange behaviour and eventually blow your CPU.
AMD has done a great job for the masses to bring a intelligent boost state to its CPUs but a terrible job for any of the manual overclockers out there.
Basically, a CPU is a lot like a fuse in that regard. A fuse uses a wire that is just small enough, that if too much voltage or amperage hits it, it blows the wire. Of course with a fuse, it's protecting something else. With a CPU, you just lost some money. The wire analogy may not be 100% accurate, but it does help clarify what is happening.
I hope that better overclocking support comes with further generations. Currently, I understand catering to the masses more than the overclockers since the company has to make profits. Hope newer releases change that though.
I think the same applies to ryzen, where AMD this time hardcoded the current limit in the FIT. This current limit can be bypassed by proberly this tool, but at the cost of putting your CPU in danger. It really takes once pounding workload related to current and gone is your CPU. Its irreversible damage. Yes a CPU is eventually all wiring, and that wiring has a certain limit before it blows. AMD designed the FIT so it would always stay within safe limits regarded to XFR / PBO. Perhaps people could archieve a bit higher clocks when they would bypass the current limit, but nobody knows exactly when or where its going to blow.
Again: i seen a guy degrading his 2700x in barely a few months by running on 1.45v. This proces normally would take a few years. This is why its so dangerous going beyond the recommended 24/7 of 1.34v on 2x00 series and 1.37v on 3x00 series. The minimum requirement for any good cooling would be 360 radiators and 6 fans or so. The usual 240 rads are capable for a OC, but not the extremer OC´s without hitting temperature limits.
Ive learned that the 2700x performs best when kept under 60 degrees. It will hold the boost state way longer and even all core on 4.1Ghz for a longer term. Its all about FIT, cooling and motherboard VRM capabilities.
Not to mention I am running 3900x at 4.4ghz all core stress tested and stable. This guy gets it!
let me get something straight here. As long as i set manual voltages, like i've been doing for years on my motherboards, everything is OK with CCX-OC?