ASUS TUF FX505 Thermal Testing, Undervolting and Overclocking
. In my configuration here, Ive got the Intel i7 8750H CPU with Nvidia GTX 1060 graphics. Thermal testing was completed with an ambient room temperature of 22 degrees Celsius so expect warmer temperatures in a warmer environment. Also keep in mind. There are heatpipes shared between processor and graphics, so a change in one component may affect the other., Like other ASUS laptops. This one also lets you pick between silent, balanced and overboost modes.. These are built in profiles that increase performance at the cost of boosting fan, speed and CPU. Tdp and Ive done my testing with all three. Starting at the bottom of the graph at idle. The temperatures are fairly cool, with silent mode shown by the light blue bars.. The gaming tests were done with Watch Dogs 2, as I find that to use a good combination of CPU and GPU.. Continuing up in the green bar with balanced mode were seeing the hottest temperatures while gaming and the temperatures drop down by around 5 degrees Celsius with overboost mode applied. As this maxes out, the fans shown by the yellow bar. With balanced mode and a 0.150v undervolt applied to the CPU shown in the orange bar, the temperatures are a fair bit better and when combining the undervolt with the faster fan speeds in overboost mode shown in Red were actually getting fairly cool temperatures., The stress tests were done by running Aida64 and the Heaven benchmark at the same time, in order to attempt to fully utilize both the processor and graphics.
Moving up in the graph and continuing with the dark red bar with balanced Mode there was a 35 watt limit on the TDP, so power limit throttling was taking place with the CPU on 90 degrees., With overboost mode enabled in pink, the active TDP rose to 45 watts. There was still power limit throttling, but also thermal throttling. Now, despite the increased fan, speed as the TDP boost is adding more heat. In the purple bar with balanced mode and the CPU undervolted. There was no difference in temperature, but well see the performance differences in the next graph.. The dark, blue bar shows overboost mode with the CPU undervolt applied, and there was still thermal throttling here. For the first time. Ive also tested using a cooling pad shown by the black bar up the top, and I was only seeing a very minor change.. These are the average clock speeds for the same tests just shown. Again starting down the bottom. We can see that with overboost mode enabled in yellow the CPU clock, speed rises up as the TDP gets boosted.. Interestingly, with my undervolt applied, the clock. Speed dropped down a bit Im suspecting because it may not have been getting enough power, although I did try lower undervolts and the result. Didnt really change and this didnt seem to be an issue with the stress tests.. Moving up to the stress tests. We can see that with overboost mode and the CPU undervolt applied were extremely close to the full 3.
9GHz, all core turbo speed of the 8750H, an impressive result under a combined CPU and GPU stress test and again no real difference with the cooling pad shown in black.. These are the clock speeds I got while just running CPU only stress tests without any GPU load.. As mentioned, there are three built in profiles on the laptop called silent, balanced and overboost.. With the Aida64 stress test running, I found these profiles to limit the CPU to 33 watts in silent 38 watts in balanced and then the full 45 Watt TDP in overboost mode. Were only able to reach the full 3.9GHz turbo boost speed on all cores under stress Test with overboost mode, while undervolted, as shown in the top red bar., To demonstrate how this translates into performance Ive got some Cinebench CPU benchmarks here with the older 7th gen i7 7700HQ, just down the bottom for comparison., With the silent profile, the laptop is quieter, but As shown, this restricts performance, though, interestingly, while undervolted in silent mode, we can get better performance than overboost mode without undervolting, which runs much louder, too. With a combination of overboost mode and undervolting, we can get the full performance of the i7 8750H. Otherwise, this was not possible prior to undervolting. In my unit.. Here are the GPU, only clock speeds, while under a graphical only stress test both at stock and with a 200MHz GPU core overclock applied, although on average in this test were seeing a 150MHz boost due to power limitations on the graphics, and I wasnt able to modify This with MSIs Afterburner.
, So how does this performance boost actually translate into games? Ive tested with the exact same Windows, Nvidia and game updates installed? The only changes were the ones listed. Here. Far Cry 5 was tested using the built in benchmark. The average frame rates at ultra settings were 5.9 better compared to stock speeds. Although the changes to the 1 low seemed to vary based on the settings., So we are able to get a nice little boost to performance with a combination of CPU, undervolting and graphics overclocking. However, this will of course, vary between games.. As for the external temperatures, where youll actually be putting your hands at idle 15 minutes after completing stress tests, it was around 30 degrees, though up to 40 near the center., While gaming, the center gets to around 50 degrees Celsius, but the rest is quite cool in Comparison and then a similar result was seen with the CPU and GPU stress tests running.. As for the fan noise produced by the laptop Ill, let you have a listen to some of these tests. At idle. The fan was still audible, even with the silent profile enabled., While gaming and under stress test. It was about the same and around the same volume as most other gaming laptops, Ive tested and then just a little louder with overboost mode and the fans maxed out.. Overall, the performance was pretty good for an 8th, gen, i7 8750H laptop were pretty much able to get full performance out of the CPU, even under a combined CPU and GPU.
Only stress test, although this did require a combination of overboost mode and undervolting to achieve, and it was still quite warm during this worst case scenario.. This is a huge improvement when compared to the previous ASUS FX504, which capped the CPU to a 25 watt TDP and resulted in poor performance and stuttering in games.. There are more heatpipes here in the FX505, which also appear to be thicker, so its better equipped to dissipate the extra heat from the higher TDP limit., As this is the highest specced version of the FX505. This should be a worst case. Id expect lower specced models to run perhaps just a little cooler and quieter due to the less powerful components.. These differences in performance shown arent hard and fast rules. There are different factors which will vary results, primarily the temperature youre running in application of thermal paste, and even the specific hardware which comes down to the silicon lottery.. You may not be able to undervolt or overclock your hardware. The same as me, it depends on the chip and its specific power requirements, so dont just blindly copy my settings and do some testing to find out where your stable point is for best results.. While you could probably improve the temperatures by swapping out the thermal paste. Thats, not something I can test in a review unit.. If I go ahead and remove the stock thermal paste and replace my own, I can't put the old paste back, so the next reviewer would experience something different from what you'd actually see with the product and unknowingly report incorrect information due to what Ive, done.
Undervolting and Raising the fan, speed, on the other hand, arent physically intrusive and as we've seen, it did improve temperatures and gaming performance a little in this particular unit. With no downside once youve got a stable undervolt., As we saw a cooling pad, can also help a little. But my particular one didnt make much of a difference.. Let me know how much of a performance boost youve found by undervolting your hardware and what you thought of the improvements here and dont forget to subscribe for the full review of the ASUS TUF FX505 gaming laptop as well as future tech.