Promising AMD Ryzen 7 7840HS GPU performance could be more than 30% better vs last-gen Radeon 680M

Following rumors about the Ryzen 9 7940HS’ performance, Tom from Moore’s Law Is Dead has leaked the 3DMark Time Spy score of the Ryzen 7 7840HS, giving us a fairly good idea about the potential GPU and CPU grunt of the Phoenix APU.

For the uninitiated, the Ryzen 9 7940HS and the Ryzen 7 7840HS are part of AMD’s Phoenix-HS lineup of APUs that combine a Zen 4 CPU with an RDNA 3 Radeon 780M/760M iGPU. The APUs are set to appear in notebooks debuting soon.

Moving to the MLID’s leak, the 8-core/16-thread Ryzen 7 7840HS scores equal to or more than 2,590 points in the 3DMark Time Spy GPU test. Sadly, we don’t the exact score since the leaker has redacted the screenshot to protect his source. What we can ascertain however is that, based on the 2,590+ Time Spy GPU score, the Radeon 780M inside the Ryzen 7 7840HS could be up to 20% faster than the Radeon 680M since the RDNA 2 iGPU scored an average of 2,170 points in our testing.

Furthermore, the sample Ryzen 7 7840HS in question was allegedly limited to 25 W. If true, this would mean that the Radeon 780M will perform considerably better at higher TDPs. For instance, per a screengrab provided by one of Tom’s viewers, the Radeon 680M managed 1,940 points in 3DMark Time Spy GPU when limited to 25 W, making the Radeon 780M more than 30% faster.

Finally, the Ryzen 7 7840HS’ Time Spy CPU score of 8,350 or above is significantly below the Ryzen 7 6800HS which scored more than 10,000 points in our testing. Then again, this is not a surprise since the Ryzen 7 7840HS was only running with a 25 W TDP whereas the Ryzen 7 6800HS has a default power rating of 35 W.

It needs to be stated that the performance of mobile APUs depends highly on the power limit as well as the cooling solution of the notebook. So, until we can get our hands on the Ryzen 7 7840HS and put the chip through its paces, take MLID’s leak with a grain of salt.

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