Lenovo Legion Y740S – gaming laptop without a dGPU?

Rendering and Geekbench

Gaming laptops in a thin body often suffer from two flaws – overheating and short battery life. What to do if you want high processor performance, but in a thin body, with good battery and at the same time not lose graphics performance when you are at home or at work? A gaming notebook with dedicated graphics card will always be heavier than an ultrabook and will not offer such battery life. On the other hand, ultrabooks lack CPU performance. The Legion Y740S resolves this dilemma.

Rendering, Geekbench

The tested Y740S configuration is equipped with a 6-core i7-10750H, similar to the Zephyrus M15 or OMEN 15. However, the Legion is significantly thinner than the competing models, so it will be interesting to see how it will affect the performance.




Let’s start traditionally with Cinebench R15 for a first look at the raw CPU performance. Due to the thin profile of the Y740S, I expect that compared to the M15 and OMEN 15 it will achieve a few percent worse results due to the thermal solution. Surprisingly, the results of single-core tests are very good, where in R15 the Y740S has a 3% lead over the M15 and only a 1% loss against the OMEN 15. In the R20 it even offers the highest score with a 1–2% lead. In the multi-core, my assumption is already beginning to show up, and in R15 the Legion is losing 2–5% to Asus and HP. In the newer R20, the difference has increased to 9%.


Blender and POV-Ray practical tests show different results. In Blender, the Y740S holds on to the competition with the same time as the M15 and loses by 4% to OMEN. In POV-Ray, however, it is already losing 14–18%.








The single-core results in Geekbench 3–5 show similar results as Cinebench and thus a 1/4/3% lead over the M15 and a -4/-1/-1% loss to OMEN 15. Multi-core also confirms the lower results, namely -1/-7/-11% compared to M15 and -6/-13/-18% against OMEN 15. The results show that the Y740S offers comparable and in some cases slightly better performance than the competition with the same processor. However, the multi-core tests correspond to my assumption of a slightly lower performance, which on average is around 5–10%.

We also see interesting results in Compute tests. First of all, comparing the integrated graphics and the eGPU dock, there’s not much to it. The RTX 2060S is 10–12 times faster than the integrated Intel UHD, which is no surprise. Interesting, however, is the comparison with the Zephyrus G14, which has the RTX 2060 Max-Q, where the Y740S with the dock wins by 20 and 9%. OMEN 15 with RTX 2070 Max-Q in one test lags behind by 5%, in the other it wins by 8% over the Legion with eGPU. In comparison, the M15 wins in both cases by 2 and 22%.

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