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7950X3D is $43.75 per core. The 24 core Threadripper part is $62.50 per core. It's certainly a higher price, but imo it's not outrageous for more memory channel
by bick_nyers 3y ago
7950X3D is $43.75 per core.
The 24 core Threadripper part is $62.50 per core. It's certainly a higher price, but imo it's not outrageous for more memory channels, registered ECC, and more PCIE lanes.
The motherboards on the other hand...
- dotnet00 3y agoI don't necessarily agree on looking at pricing that way. One reason being that the 24 core part is 8 ccds with 3 cores each, while the 7950x is 2 ccds with 8 cores each, so the threadripper is able to go with much lower quality chips which would have otherwise gone in the bin.
- andrewprock 3y agoWhat do you think the appropriate way of looking at pricing is? Once you get beyond 8 cores, your ability to saturate the CPU comes down to very specific parallelized workflows that can benefit close to linearly from extra cores. If you have that kind of workflow (render farms, encoding, etc) then the marginal cost of a CPU feels relevant. I'm sure there are other workflows, especially in the cloud where you are rending out fractions of a CPU. But for individual professionals, what else besides marginal core cost would you consider?
- bick_nyers 3y agoDon't you incur the cross-CCD latency every time you hit the 3D L3 cache anyways? Still, that's good info., I must have missed that part where they are doing their CCD layout like that.
- icegreentea2 3y agoI don't think you get a cross-CCD hit for 3D v-cache - rather the entire L3 cache for that chiplet is slightly slower (latency wise) - https://chipsandcheese.com/2022/01/21/deep-diving-zen-3-v-cache/ https://chipsandcheese.com/2022/01/21/deep-diving-zen-3-v-ca...
- wmf 3y agoThreadripper doesn't have V-cache though.
- hypercube33 3y agoimagine if it had a shared cache....
- wmf 3y agoA shared cache would be slower. Better for some apps, worse for others.
- ip26 3y agoEven if it uses chips with defective cores, it's four times the silicon. The 24-core Threadripper is actually greatly advantaged compared to the 7950x for the right workload. There is four times the L3 cache, and four times the bandwidth from the chiplets to the io die. If you just needed a place to sell chips with a core defect, there are Ryzen SKUs for that.
- iopq 3y agoYou mean the Threadripper has a lot more cache on the 24 core part so it's going to be much better in those workloads that fit into its cache but not into the 7950x's?