Question about low voltage OC and results obtained.
Question about low voltage OC and results obtained.
Hi all,
I'm experimenting with low voltage overclocking on my Ryzen 3900X after checking that post. It seems only about 6% can keep 4.2 all-core at 1.25V, depending on the chipset. Right now I'm stable at 4.2 with 1.225V. I'm curious to hear what others have done with low voltage OC and their temperatures. Also, thoughts on whether it's better to run this OC compared to auto settings with a smaller offset?
I own the 3700X but I'm interested in how the 3900X performs and its OC potential.
You mentioned it was "OC'd" to 4.2GHz? What is its actual performance at the default settings for an all-core turbo boost on your system, not the manufacturer's numbers? It seems like it could outperform that, but...
Are you aiming for the lowest voltage or the best performance?
My 3700X performs optimally with the default configuration (about 4.3GHz all-core), though it also operates at 1.5V. Temperatures stay reasonable, usually around 55°C during gaming.
Update
with NZXT Kraken X62.
3.8 is the standard clock, supporting up to 4.6 on two cores (with boost). I'm focusing on low temperature performance with full core 100% oc atm. After 2 hours under 100% load, I'm at 55 degrees. To prevent exceeding 1.25v due to decreasing CPU lifespan when used daily above that voltage, I'm considering 4.3. At 1.25v it might work, and 1.2 would be great for good low-temperature performance with minimal power use. All core boost typically stays around 4.1 to 4.2 at about 1.35v stock, based on what I've seen.
Is the clock speed set to auto when adjusting voltages? Do you perform benchmarks following each change to verify that performance remains stable after reducing the voltage?
I am adjusting the clock manually, according to what I've read, they're experiencing problems reaching their 4.6 single core and only getting 4.2. This was what I observed, even when allowing it access to over 1.45v when it needed it. I'm testing sustained loads with Prime95 and Heavy load, and running 10 Cinebench R20 tests per clock change. At 4.2 @ 1.2 it stayed stable underload but unfortunately didn't pass the real-world tests I tried. A 1.225v setting was stable across 20 R20 tests and is currently at 8 hours blend on Prime95, with performance being 7000 vs 7500 on R20 (stock vs under volt OC). Temperatures are about 4-5 degrees lower and much more consistent because the boost settings were removed, which I think is a positive change from what I've seen in testing. Would love to hear from other 3900x users if you're also only seeing 4.2 on boost instead of 4.6.
I own a 3900x on a gigabyte ultra X570 with 32 gigabytes of corsair vengeance 3200 DDR4.
I've managed to achieve a stable 4.3 ghz across all cores, using about 1.18126 voltage CINebench r20 around 7330 consistently. Idle at roughly 37 c., working from home typically between 40-43. Games with a 5700Xt red devil run around 52-55 most of the time. On Cinebench with a coolermaster 360mm, I reach up to about 63C.
Notably, I only maintained stability at 4325 for 300 seconds at 1.325 voltage.
I'm new to this setup but decided against pushing further since the lower voltage gives me more consistent results (it only improved my score by over 50 points on Cinebench).