Dėkui už paaiškinimus žiopliui. Galvojau viskas paprasta tuose 
laptopuose - greitesnis cpu... na ir yra greitesnis cpu :) visada.

O čia matai visokie trotlinimai kaip mobilekuose ir pan :)
Suprantu, kad tas vyksta su visais cpu, bet laptopuose (kaip ir 
mobilekuose) tas turbūt ypač aktualu...




On 2018.06.13 09:44, MRT wrote:
>>> After a few seconds, the CPU is throttled down to 1.8 GHz.
>>>
>>> Tokiu prikolu su desktop'iniu i5-8400 isvengtum.. o laptop'e - 
>>> loterija, storesni/sunkesni - laimingesni..
>>
>> Va čia jau blogiau. Reikės išsirinkus modelį paieškot normalių testų.
> 
> 
> PS. modifikacija su galingesniu GPU ar su silpna GPU turi itakos..
> Ypac jei ausinimo sprendimas tarsi "shared" tarp CPU ir GPU,
> o review ima koki nors testa, kur apkrova eina per CPU ir GPU:
> 
> https://www.notebookcheck.net/Lenovo-ThinkPad-E580-i7-8550U-RX-550-Laptop-Review.286856.0.html 
> 
> https://www.notebookcheck.net/fileadmin/_processed_/b/6/csm_open_733945a2e4.jpg 
> 
> 
> It seems as if the E580’s cooling solution is identical to the E480
> that was equipped with the slower Core i5-8250U microprocessor.
> 
> We were thus very curious how the E580’s more powerful CPU would perform,
> and it did not take long to disappoint us. In Cinebench R15’s multi-core 
> test, the E580’s
> nominally faster Core i7-8550U turned out to be slower than the E480’s 
> Core i5-8250U.
> 
> This was not only the case in the stand-alone test, but also during our 
> sustained load test running Cinebench in a loop.
> 
> -- 
> 
> https://www.notebookcheck.net/ThinkPad-E480-i5-8250U-RX-550-Laptop-Review.280524.0.html 
> 
> https://www.notebookcheck.net/fileadmin/_processed_/9/6/csm_internals_840eb2e9fb.jpg 
> 
> 
> 
> In the E480, the CPU never reaches the maximum clock rate of 3.4 GHz in 
> the Cinebench multi-core test.
> At the beginning of the test, the clock rate is 2.9 GHz, which means 
> that the CPU is allowed to consume about 25 watts.
> After a few seconds, the CPU temperature reaches 78 °C (172.4 °F)
> and the clock rate drops to 2.3 GHz. At the same time, consumption drops 
> to 15 W.
> 
> -- 
> 
> https://www.notebookcheck.net/Lenovo-ThinkPad-T580-i7-8550U-MX150-UHD-Laptop-Review.299796.0.html 
> 
> https://www.notebookcheck.net/fileadmin/_processed_/2/5/csm_internals_dd343f23e9.jpg 
> 
> 
> Lenovo has increased the TDP in many current-generation ThinkPad models.
> For instance: The ThinkPad T480s is allowed to draw 44 watts over a 
> prolonged period of time.
> Lenovo has also raised the TDP limit in our current review device, 
> because the T580
> is allowed to draw 25 watts over an extended period. Here Lenovo 
> actually allows a power
> consumption of 44 watts and a clock rate of 3.7 GHz for a short time.
> However, this is only possible for 28 seconds and after that, the power 
> consumption falls down to 25 watts.
> This also explains the initial results in our Cinebench R15 benchmark loop,
> where the T580 achieves the best results in the first benchmark run.
> 
> After 10 benchmark runs with a relatively stable score of about 620 
> points, the score dips significantly
> in the 12th benchmark run. The reason for this is that there is an 
> additional thermal limit of about 80 °C (176 °F),
> which apparently kicks in when the processor continuously draws 25 watts 
> and is taxed over an extended period of time.
> Here the clock speed falls down to 2.4 GHz, but it picks back up again 
> after the CPU cools off.
> 
> +
> 
> All in all, we are very satisfied with the CPU performance of the T580. 
> The Core i7-7500U in the T570 was 43% slower.
> Nevertheless, the T580 cannot keep up with the performance of the 
> workstation CPU in the ThinkPad P51.
> In addition, the new 45-watt hexa-core processors like the Core i7-8750H 
> are significantly faster than the Core i7-8550U.
> 
> (uzuomina i mobilia workstation plyta uz dafyga pinigeliu):
> https://www.notebookcheck.net/Lenovo-ThinkPad-P51-Xeon-4K-Workstation-Review.229212.0.html 
> 
> 
> Lenovo has increased the TDP limit from 45 to 55 watts (even 75 watts 
> for a short time), so you can utilize the high clocks.
> You can also notice the advantage of the thicker construction in the 
> benchmarks.
> While the same Xeon processor in the much slimmer Dell Precision 5520 is 
> still on par in the
> Cinebench R15 Single test, it suffers from temperature problems in the 
> Multi test and falls behind by 17%.
> The difference compared to the slimmer ThinkPad P51s is also 
> significant, because the ULV
> processor does not even manage half the points of the P51 (CB R15 Multi).
> 
> =========
> 
> Zodziu cia tiems pasakotojams apie elektros taupyma CPU-heavy darbuose 
> su laptop'ais vietoj stacionaro reiktu truputi susimastyt..
>