Dell G7 7590 (RTX 2060) Thermal Testing, Overclocking and Undervolting
So just how hot does the new G7 get In this video Ill be? Taking a detailed look at thermals and seeing how much we can improve performance with some simple tweaks., The new Dell G7 is available in different configurations. My model has the i7 8750H CPU Nvidia, RTX, 2060 graphics and 16gb of memory running in dual channel, so expect different results with different specs.. You can find updated pricing for different models linked in the description and Ill. Also note that Dell has already refreshed the G7 lineup with Intel's latest 9th gen CPUs, so expect slightly different results. There. On the bottom of the laptop there doesnt appear to be many vents for air flow theyre just directly above the fans. Heres. What were looking at inside in terms of cooling, with a couple of heatpipes shared between the processor and graphics, so a change in temperature of one of these will affect the other.. The Dell Power Manager software allows you to change between a few different modes. However, I didnt really find them to do too much as well. See soon. Ill. Also, note that while you can install the Alienware control center software, this did not give me any fan control. The best you get is changing between the power manager. Profiles. Thermal testing was completed in an ambient room. Temperature of 21 degrees Celsius so expect different results in different environments. Ive tested idle down the bottom, with the quiet profile and temperatures seemed about average, while also being quiet more on fan noise later though.
, The rest of the results are from combined CPU and GPU workloads And are meant to represent worst case scenarios.. The gaming results towards the upper half of the graph were tested by playing Watch Dogs 2, as I find it to use a good combination of processor and graphics.. The stress test results shown on the lower half of the graph are from running the Aida64 CPU stress test and Heaven GPU benchmark, at the same time, to fully load the system. Lets start with the stress test results. We can see that the ultra profile ran a bit warmer under the same workload when compared to the default optimized profile and well, look at clock speed differences in the next graph.. The ultra profile was providing slightly better performance, though so Ive used it for the majority of the testing.. If we apply a 0.15v undervolt to the CPU, the temperatures dont change. But when I add my Thermaltake Massive 20 cooling pad, we can lower the GPU by 6 degrees Celsius and the CPU by 4.. The gaming results werent too different. The GPU was slightly warmer in this game compared to the stress tests, while the CPU undervolt managed to barely lower the CPU temperature. With the cooling pad applied. There were some nice improvements, lowering by 7 degrees on the GPU and 6 on the CPU.. These are the average clock speeds for the same tests. Just shown. With the stress tests were getting a small boost to CPU performance, with the ultra profile enabled, which is why it was a little warmer than the default optimized profile in the last graph.
. Under this workload, I found the power limits for the CPU would dynamically change. However, on average, over a 30 minute period, the optimized profile averaged a 30 watt TDP, while the ultra profile averaged 35 watts.. When we undervolt the CPU, the clock. Speed rises by more than 400MHz on all 6 cores, and then a little extra was gained with the cooling pad in use. Im, not certain why there was improvement to CPU clock speed with the cooling pad. I wasnt seeing thermal throttling just power limit throttling. However, the software was clearly dynamically. Changing the CPU TDP as time went on., Perhaps with cooler temperatures its smart enough to raise the TDP limit and improve performance which would explain the higher average TDP reported by HWInfo. For this test. Back to the clock speeds, the gaming performance out of the box was around 3.4GHz on all 6 cores in Watch Dogs 2. While the undervolt improved this by around 400MHz on all cores, with no change seen here using the cooling pad, though, as we saw earlier, temperatures were improved by a fair amount.. So, to summarise, the CPU hits power limits under combined CPU and GPU load, preventing thermals from getting out of control.. The best improvement we could make was by undervolting the CPU which improved performance, while additional cooling did seem to help in some cases.. These are the clock speeds I got while just running CPU only stress tests without any GPU load.
, The full 3.9GHz all core turbo boost speed of the i7 was possible, so no change from undervolting.. When we look at the temperatures for the same test, though, we can see a large improvement of 14 degrees Celsius, and this was due to a lower TDP as less power is needed, while undervolted, which equals less heat., To demonstrate how this translates into performance. Ive got some Cinebench CPU benchmarks here.. I actually got the exact same results, even though I take an average of 5 runs, not too surprising. Given we got the same. Cpu clock speeds, earlier. Things change a little with the newer Cinebench R20, though this test seems to be more intensive, so was able to cause some power limit throttling at stock, which is why the score was higher once undervolted.. So how do these performance boosts 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 at 1080p.. At ultra settings there was a 3.4 improvement to average FPS with the CPU undervolted and graphics overclocked. With a larger 5.6 boost to 1 low., The 1 low saw the biggest improvement at all setting levels. Then at the lower settings there was hardly any difference. In average FPS, so for the most part, we can boost the performance in games with some simple tweaks.. If youre after more gaming benchmarks with the Dell G7 check the card in the top right, where Ive tested 20 different games.
. As for the external temperatures, where youll actually be putting your hands at idle with the quiet profile on, it was only just getting to the low 30s about average. While gaming, the wrist rest area, remains cool with the center getting into the mid 40s warm, but not Hot., The results were similar with the stress tests running with the back getting into the 50s and feeling hot to the touch. Granted, you wont need to touch back there, except for the power button, though that is where the fingerprint scanner is., While gaming on battery power, the wrist rest area heats up a bit as the discharging battery is directly underneath. However, the rest remains cool compared to the previous tests.. As for the fan noise produced by the laptop Ill, let you have a listen to some of these tests. At idle with the quiet profile. It was completely silent. No fan noise at all., While gaming or with the stress tests running in the optimized or ultra profiles, there was no change.. The fan was maxing out at around 52 decibels, a little below most other gaming laptops, Ive tested, while under the same loads. Overall, the new Dell G7 gaming laptop performed quite well in these tests, without getting too hot, at least when compared with the G5 that I Tested previously, which would hit 99 degrees under the same workloads., This seems to be due to power limit throttling thats present in the G7. So, while the clock speeds arent quite as high as the G5, the temperatures are much more reasonable.
. Let me know if youd be interested in seeing a full comparison, video between the G5 and G7 down in the comments. Undervolting, the CPU was the best way to improve performance. Essentially, this results in the CPU being able to do more with the power available.. I would have liked to have seen better fan control options, though, like we were told about at CES as the Dell Power Manager, software weve got, doesnt really give much flexibility. The 180 watt power brick. That Dell provided with the G7, appears to be adequate for these specs. I wasnt seeing battery drain during any of my testing.. I dont believe power limits were put in place to prevent this. As the G5 I previously tested, didnt have as much power limit throttling, though it ran hotter as a result, however, I didnt see battery drain there either. 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, adjust power profiles or using a cooling pad are much easier for most people to do anyway and as weve seen, these tweaks did help improve performance of the Dell G7 gaming laptop.. Let me know how much of a performance boost youve found by undervolting your hardware and what you thought of the improvements here, and course dont forget to subscribe for the full review of the new Dell G7 gaming laptop as well as future thermal testing.