Lenovo Y7000 Thermal Testing – Hot or Not?
? The configuration Ive got has an Intel i7 9750H CPU, 80 watt Nvidia GTX 1660 Ti graphics, 16gb of memory in dual channel and a 15.6 1080p screen., Its also available in different configurations. You can check prices of different specs with the links in the description. Air is pulled in underneath the machine through the vents towards the back then exhausted out of the back from the left and right corners, as well as from the vents on the left and right Sides towards the back.. There are a couple of fans inside with a heatpipe shared between the CPU and GPU., The Lenovo Vantage software lets us select different performance modes, ranging from quiet, balanced and performance.. These different modes control power limits, as listed here, however, no undervolting or overclocking, is automatically done by the software.. The software also allows us the option of disabling hybrid mode, which basically disables Optimus, thereby improving gaming performance and Ive done. All my tests, like this. Thermal testing, was completed in an ambient room temperature of 21 degrees Celsius so expect different results in different environments.. Both the CPU and GPU are looking fine at idle.. The rest of the results are from combined CPU and GPU stress tests and are meant to represent worst case scenarios, as I ran them for extended periods of time.. These stress test results are from running the Aida64 CPU stress test, with only the stress, CPU option checked and the Heaven GPU benchmark at max settings at the same time to fully load the system.
. The gaming results are from playing Watch Dogs 2, as Ive found that to use a good combination of CPU and GPU., Whether gaming or under stress test. The temperatures were the lowest in quiet mode as this caps, the CPU power limit to a low 25 watts. Temperatures raise up significantly with balanced mode, as this sets the power limit of the i7 to its default 45 watts. In performance mode. The CPU starts hitting thermal throttling at 94 degrees, Celsius. Im only showing averages here with this game running, it was definitely still spiking up into thermal throttle territory. Despite the slightly lower average than the stress test., It was possible to lower the temperature back a little simply by undervolting the CPU.. This helped lower the GPU by a degree too, due to the shared heatpipe cooling design., It was possible to lower the temperatures with a cooling pad by a fair amount as well.. These are the clock speeds for the same tests, just shown. As expected in quiet mode. The CPU performance was the lowest due to the CPU power limit caps.. Interestingly, the GPU performance was the best here Im guessing because theres plenty more power and thermal headroom available when the CPU is doing less., Balanced mode, improved, CPU performance significantly, then performance mode only helped a little extra. As thermal throttling was now the limitation. As undervolting the CPU in performance mode, was enough to remove the thermal throttling were able to hit the full 4GHz all core turbo boost speed of the i7 9750H, so max performance was possible in these workloads with a simple tweak.
. Although the cooling pad did further help lower temperatures, it makes no difference here. As the undervolt was enough to remove the throttling., We can see that the GPU power limit was always at 80 watts, regardless of the mode selected. As a result. Games that are more GPU heavy, rather than CPU heavy, still play. Ok in quiet mode as well see soon.. We can see the quiet mode power limit cap, the CPU to 25 watts, then 45 watts in balanced, then, as it raises up to 50 watts in performance mode. This wasnt quite being hit in the stress test, as thermals were limiting performance from going further. As undervolting requires less power. This change sees a slight drop off in CPU power and, as we saw in the last graphs, also improves performance and temperatures.. Here are some Cinebench results to give you an idea of CPU only performance when the GPU is idle. In performance mode, its fairly similar to many other i7 CPUs. However, even in a CPU, only workload like this thermal throttling was still taking place and was the limitation. At least initially after PL2 runs out CPU only workloads in performance mode cap at 70 watts. So thermal throttling stops and power limit throttling begins. The CPU undervolt helped out allowing the i7 to perform without thermal or power limits being triggered.. As for the external temperatures, where youll actually be putting your hands at idle, it was in the low to mid 30s, pretty normal.
, With the stress tests running in quiet mode. The center is only warm to the touch in the low 40s. Stepping up to balanced mode. Didnt really change things its perhaps just a little warmer now., With the highest performance mode, enabled its a little warmer now again, not really hot, just warm in the middle and the CPU undervolt didnt really seem to change the external temperatures despite the internals lowering. Heres, how The fans sound during these different tests., The fans were completely silent at idle., Balanced mode and performance were basically the same and both were only just ever so slightly louder than quiet mode.. Although quiet mode in the software states that it uses lower fan, speed Id hardly call this much lower. Its also worth noting the CPU undervolt didnt change fan speed despite running cooler. Lets, actually see how different games perform with these different settings. Ive tested Shadow of the Tomb Raider with the highest setting preset using the games benchmark tool.. The results were quite interesting but match up with what we saw. Earlier. Even in quiet mode, were seeing good performance here. Presumably, as this game with these settings is more GPU heavy and the GPU performance in quiet mode or with the CPU undervolted in performance did score the highest GPU clock speeds. As Far Cry 5 is a bit more CPU dependent. We see more of a difference, however. The frame rates in quiet mode still arent really all that much lower than the other modes, and in this test the undervolt was hardly affecting the results.
. As you heard earlier, the fan noise was very similar between the different modes, so using quiet mode in the hopes of actual quiet gaming doesnt seem possible.. At least it gives good performance, but it also makes the mode kind of useless when you can just use performance mode for best results, same fan, noise and similar external temps.. If you want to see more gaming benchmarks from the Y7000 check the card in the top right, where Ive tested 20 games at all, setting levels. Overall, the Lenovo Y7000 does run on the hotter side when under load in performance mode. But to be fair, it does push the CPU power limit to 50 watts in combined CPU and GPU load, which is above many other gaming laptops.. If we simply undervolt the CPU its possible to remove the thermal throttling, at least in the workloads Ive tested here and get full performance. Due to the large ventilation on the bottom, a cooling pad was a great way of improving thermals. With this machine.. Like many other modern Lenovo gaming laptops, Ive, tested, fan, control seems to be lacking.. Although the three performance modes in the vantage software claim to modify, fan, speed under stress test and the game I tested, I found basically no difference.. There may be more of a difference under less stressful workloads. However, Id still much prefer to see the user at least given the option of fan control., They used to give us the option of setting the fan speed to maximum in older models with the control shift.
One shortcut but thats still missing here, which is unfortunate.. These differences in performance shown arent hard and fast rules. There are different factors which will vary results, primarily the temperature of the room, 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.. It may be possible to further improve temperatures by swapping the thermal paste. However, as this is a review unit that I have to send back Im not able to change the paste, otherwise, the next reviewer will unknowingly report different results. Due to what Ive, done. Undervolting and using a cooling pad are much easier for most people to do than changing paste anyway and as weve seen, these tweaks helped improve both performance and temperatures with the Y7000.. Let me know what you thought about the thermals from the Lenovo Y7000 gaming laptop down in the comments and if youre new to the channel youll definitely want to get subscribed for the upcoming full review to see everything.