Some Alienware laptops are reporting fewer RTX 3070 cores than they need to be
Is that this a case of a mistaken vBIOS or is one thing else afoot? Some Alienware m15 R5 gaming laptop computer house owners try to reply that very query after discovering fewer CUDA Cores inside GPU-Z for the RTX 3070 laptop computer chip than there must be—512 cores much less, actually.
It is fairly normal process for laptop computer producers to mess with clock speeds and TDPs to suit a laptop computer’s cooling resolution and energy supply. What is not traditional to do in any respect is scale back core counts to realize a extra palatable card, so we suspect there could also be one thing else occurring right here.
Nvidia’s cell RTX 3070 GPU comes with 5,120 CUDA Cores, which is already 768 cores shy of the desktop mannequin. But some Alienware m15 R5 house owners over on Reddit and the NotebookReview Boards have seen simply 4,608 cores reporting for responsibility in GPU-Z, which is even fewer nonetheless (by way of Videocardz).
Even weirder are the reported numbers of TMUs and ROPs: 144 and 96, respectively.
There must be 160 TMUs, however the discount right here checks out with the decrease core rely: 4,608 cores would make for 36 SMs, and there are 4 TMUs per SM for a complete of 144. Fewer than anticipated, and never supreme, nevertheless it makes some sense.
Relating to ROPs, nevertheless, there must be 80 in complete with the RTX 3070 cell chip. What we’re taking a look at right here is the complete 96 ROPs of the GA104 GPU, that are solely discovered inside the RTX 3080 cell GPU and the RTX 3070 desktop GPU.
Alienware R5 house owners have since taken it upon themselves to check out a number of completely different choices in quest of a repair, and these embrace flashing the vBIOS. It is a probably harmful manoeuvre for a gaming laptop computer, as it could result in bricking the GPU. On this case, a GPU soldered onto the laptop computer’s motherboard, making it doubly dangerous.
So kudos to those that tried it, as they could have additionally figured this complete factor out within the course of.
A BIOS supposed for the Alienware m15 R4 laptop computer, as soon as loaded onto the R5, returns the complete 5,120 CUDA Cores to all their glory. Customers are additionally reporting larger efficiency because of this, so it seems as if the GPU inside the affected R5 laptops was underperforming as a result of an underreporting vBIOS.
Customers are hoping for an official repair to keep away from the awkward flashing course of, which is something however a everlasting resolution for these affected. Many have reached out to Dell assist for solutions, and we’re additionally chasing as much as see if there’s an official reply to what is going on on.
Within the meantime, if you happen to personal an affected R5 laptop computer, it’s possible you’ll wish to attain out to Dell assist on to be the primary to know when there’s a repair, which I can solely assume might be on the way in which quickly. Like I mentioned, flashing your vBIOS might be dangerous enterprise, so we would advocate holding fireplace till there is a extra sanctioned repair in place—here is hoping one arrives quickly.