Recommendation: 64GB kit @ 3200MHz for Blade 15 (2021) | Razer Insider
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UPDATE: as @dudepare01 correctly states, the actual performance depends on

both the CAS latency and the RAM frequency, apparently inversely proportional

to the former and directly proportional to the latter; so, simple math shows that



  • CL16@2666MHz is actually FASTER than CL20@3200MHz...

  • CL17@2933MHz beats the former as well.



The actual percentages rounded to two decimals are:



  • (2666/16) / (3200/20) = 104.14%



  • (2933/17) / (2666/16) = 103.54%



  • (2933/17) / (3200/20) = 107.83%



So, fixating on 3200MHz while ignoring the CAS latency is a patently *bad* idea.

To beat the CL17@2933MHz combo, CL18@3200MHz would be needed...



--------

After my first misguided attempt, I'm looking for recommendations.



Had I been more careful and read all the comments on the product page,

I should've guessed that these Crucial Ballistix modules probably won't run

at their advertised 3200MHz in the 2021 Blade 15 (with no XMP support).

Now, I have first-hand proof...



I'm considering this pair of Kingston Fury Impact modules as replacement.

According to their datasheet**, these should work, since their "default"

configuration is @3200MHz, albeit I'm a bit worried about the caveats

regarding BIOS limitations...



Has anyone tried these and can confirm one way or another?









** Jee, _some_ companies still publish details, not only a few lines of well chosen selling points...



  • no XMP support should be clearly marked in the Blade's specifications;

  • similarly, Crucial would do well to indicate that its advertised speeds are only valid *with* XMP.

I think Crucial requires 1.35V to run @3200Mhz. I am using a 32 GB Hyper X / Kingston Fury sodimm @2933 MHz works with no issues (1.25V) and has tighter timings (2933MHz @CL 17) which may provide better performance vs 3200 Mhz @CL20 or CL22.
I got that Kingston Fury kit (64GB @ 3200MHz) and it clocks in at 3200MHz on my Blade.

.Z4x.
I got that Kingston Fury kit (64GB @ 3200MHz) and it clocks in at 3200MHz on my Blade.



That looks great, good to know. My Razer 17 also showed 3200mhz in BIOS but in windows, CPU-Z reported the running clock speed at 800mhz. How does your "memory" tab in CPU-Z look in Windows?
DavidDenyer
How does your "memory" tab in CPU-Z look in Windows?




I don't normally use either Windows or CPU-Z; so, it's hard to say.

I might boot to Windows, install CPU-Z, and check when I get the time...
.Z4x.
I don't normally use either Windows or CPU-Z; so, it's hard to say.

I might boot to Windows, install CPU-Z, and check when I get the time...


That would be very helpful.



I'm very curious as to how Razer can advertise 3200mhz RAM that clocks at 800mhz. When I messaged support they just decided to replace the laptop, but the notebookcheck.com review also has the same 800mhz clock speed. I'll see when the new laptop gets here but I expect it'll be exactly the same. Very difficult to understand what's going on.
Use HWinfo, get a screenshot as well.



DavidDenyer
That would be very helpful.



I'm very curious as to how Razer can advertise 3200mhz RAM that clocks at 800mhz. When I messaged support they just decided to replace the laptop, but the notebookcheck.com review also has the same 800mhz clock speed. I'll see when the new laptop gets here but I expect it'll be exactly the same. Very difficult to understand what's going on.
DavidDenyer
That would be very helpful.



I'm very curious as to how Razer can advertise 3200mhz RAM that clocks at 800mhz. When I messaged support they just decided to replace the laptop, but the notebookcheck.com review also has the same 800mhz clock speed. I'll see when the new laptop gets here but I expect it'll be exactly the same. Very difficult to understand what's going on.






Wow! I'm honestly surprised that Razer would swap a fully functional laptop

based on the output from possibly buggy software. Or, perhaps, they've run

CPU-Z on other units of the same model, and they know it's not a bug...



I don't know. In any case, I've ran both on my Blade and I posted the results

in the other thread... Heck... I'll fire it up again, and post a few screenshots...



I pretty obvious difference between HWiNFO and CPU-Z is that the former

reports a command rate of 2T, while the latter only 1T. I think that's enough

to explain the difference, but I'd be very interested to hear theories as to

**WHY** that happens and which one is correct.
.Z4x.
Wow! I'm honestly surprised that Razer would swap a fully functional laptop

based on the output from possibly buggy software. Or, perhaps, they've run

CPU-Z on other units of the same model, and they know it's not a bug...



I don't know. In any case, I've ran both on my Blade and I posted the results

in the other thread... Heck... I'll fire it up again, and post a few screenshots...



I pretty obvious difference between HWiNFO and CPU-Z is that the former

reports a command rate of 2T, while the latter only 1T. I think that's enough

to explain the difference, but I'd be very interested to hear theories as to

**WHY** that happens and which one is correct.




Considering the latencies, you are running Dual Channel @ 3200 Mhz CL20 on XMP profile
.Z4x.
Wow! I'm honestly surprised that Razer would swap a fully functional laptop

based on the output from possibly buggy software. Or, perhaps, they've run

CPU-Z on other units of the same model, and they know it's not a bug...



I don't know. In any case, I've ran both on my Blade and I posted the results

in the other thread... Heck... I'll fire it up again, and post a few screenshots...



I pretty obvious difference between HWiNFO and CPU-Z is that the former

reports a command rate of 2T, while the latter only 1T. I think that's enough

to explain the difference, but I'd be very interested to hear theories as to

**WHY** that happens and which one is correct.




Thanks so much for these screenshots, I really apprecaite it. It does help narrow things down.



Looking at the timings table in CPU-Z here it certainly looks like you have XMP running. I think mine (Razer 17 mid-2021) just said JEDEC for all 4. Hard to say for sure because all the screenshots were on the laptop which is now in a Razer warehouse and will never come back to me.



But still, both of our Razers are showing 800mhz in CPU-Z. It's been said in this thread that CPU-Z has a bug with 11th gen intel CPUs. I haven't found any other reference to this though, so I can't confirm but it does seem likely:





CPUz has some issue with DRAM values in 11th gen processor. I have watched Dell inspiron 5402 with 3200Mhz default ram. In cpuz DRAM is showing as 800mhz instead of 1600mhz. CPUZ is showing half of the half in 11th gen processors. So there may be a bug.




I think I'm starting to realise that the laptop replacement was entirely unnecessary and that it might well have been functioning normally, perhaps even running at 3200mhz without XMP. I'd love to hear more from those more knowledgable than me on this.
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