KarathKasun

You need a scope to test, not a DMM.

NH-D14 is pretty much as good as it gets on air, and it will last forever with minimal maintenance. Temp difference and OC difference will be minimal.

Yeah, its difficult to get a NH-D14 on a GPU, but it is possible. And temps are pretty much the same as water with only a modest upgrade in fans. Most people will not go through the riser + case modding to do this though. GPUs are primarily space constrained with air cooling.

200hz is doable on good CRTs.

Back to thread topic, what kind of fans were you using on the NH-D14? Was it with the stock, nearly silent, fans?

Custom heatsinks are a thing. And you ignore the thermodynamic limits, falling back to just repeating "more surface area" with your fingers in your ears. Gotchya.

You addressed nothing. You changed the TIM in the argument, not me. I even gave you that, but you have presented nothing other than "nuh uh". Are you stepping back from your claim and saying WC is only about noise now?

Sub ambient is a wholly different ball game. ΔT is generally HUGE when you go sub ambient, because you are just driving down the "ambient" side of the equation so much that a higher ΔT simply does not matter. The fact that you are grasping for straws outside of the thermodynamic scope shows your lack of data.

It is limited. Liquid metal is not infinitely better than TIM. Not to mention the thermal resistance of the silicon itself. Because the thermal interface is still the same for both, the limit is the same. You CAN hit the TIM limit for LM with both given enough effort.

There are cheaper X570 boards. Also remember, X570 is eating part of ThreadRippers market. So there will be more expensive top end boards, which you do not need for gaming.

You seem to have no experience with cooling. More surface area does not = lower temps beyond a specific point. Beyond ~480 worth of rads with normal "PC type" fans and you are not significantly changing your Δ T for a CPU. With extreme high flow fans you just need less rad to get there. You cant keep adding loop cooling capacity and actually realize meaningfully lower CPU temps. The practical limits for both result in pretty much the exact same Δ T. The only benefit with water is that your PC isnt circulating ~1000CFM of air and sounding like a freight train. As a bonus, ALL temps are lower with massive air setups. Board temps can be 20c lower or more.

It seems you have not gone big air with big fans ever, I suggest you do some internet digging and look at what is possible with a properly setup air system. It is not popular due to noise, and not many that do custom loops ever touch a good air benching system before writing them off. The best comparison I have found is a Δ T of 40 vs 50, for an EKWB GPU block vs "high end air". Going big fans over stock fans changes the Δ T of most heatsinks by ~10...

Yes, because the approach to ambient is "infinite". The closer you get the less heat you can remove, so you can only approach yet never attain. This also applies to your block, and any other heat transfer system. It just so happens that where you get to the point that water cooling is approaching ambient CPU temps is... just about the same as air. Close enough that there is no advantage.

Its not math and physics, its thermodynamics. The lower the temp of your water/rad, the less heat you expel from your loop. Once your water is ambient, there is no improving cooling. It does not matter how much surface area and airflow you add. At that point you have to increase flow rate of the coolant. And you can not move beyond the pressure gradient that your block can withstand.

You get to a point of diminishing returns due to blocks, pumps, TIM, and heat spreaders... even if you slap the same fans on the custom loop. You can only cool the heat that you can extract from the silicon.

You can get the same clocks with big air and really big fans (~300CFM). Unless you are talking about perf/dB, which is also not just performance. You tend to not see real big air OC's anymore due to the ease of just slapping a 360 CLC+decent fans on a setup, which can also get to the same clock range.

AIO/big air + 9900k... 5-5.2ghz. Full custom WC loop with ~$1000 in parts... 5.3ghz. 5.4ghz if you are lucky or buy a binned chip. Big die/cluster CPUs can gain a bit more. GPUs don't gain much considering where they top out on LN2. Maybe 2300 core on a good NV sample. The gains are typically sub 10% (much less for specific CPUs/GPUs) unless you are the type that buys stuff, overclocks it, and returns it when it doesnt hit your target. Or you just get to put your hands on lots of hardware.

System performance is not significantly impacted over big air or big CLCs, no matter how many radiators you use. An extra sub 5% in clocks is not going to net a perceptible boost in games.

It shows up on a few cards, I think it has to do with how many devices hang off of the primary device. 1080 Ti has the video adapter and the HD audio device. I think the RTX cards also have something else related to the USB-C port.

If overclock more, you mean ~100mhz more, yes. Its not a "good" investment unless you cant get a faster CPU/GPU model and you need the extra 0.5%.

Has nothing to do with how new or old the GPU is. Its a bug with PCIe init in the BIOS.

PCIe lane grouping on X370 can cause driver problems in some cases. It has to do with it being behind the chipset and how the BIOS initializes the PCIe devices. People working on KVM virtual machine setups have noted this problem and had to use workarounds.

Check with your old PSU first. If the problem still happens, replace MB. OR, look for bulging capacitors on your MB and replace them.

With a system this old, the capacitors are likely failing. If the PSU is as old as the CPU, its power output is likely less than half of its original rating. As the caps age, noise increases on the PSU outputs and it is likely triggering low voltage protection or is swinging too low to power the CPU/GPU. The same principal applies to capacitors on the motherboard and GPU. Try your old PSU and see if the problem goes away to test the PSU.

Yep, worst price/perf PC upgrade.