Mid-Range Hshcracking Rig - Relevance of PCIe Bandwidth,GDDR-Type, VRAM, Blower-Fan e

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1. Don't try to put non-blower cards into a server chassis. They won't be happy, if they fit in the first place, even in 4U.
If you want the "right" GPU to get right now, especially with the 4090 discontinued, look here: https://www.amazon.com/GIGABYTE-GeForce-...B0D87BVDWQ
or here: https://www.amazon.com/MSI-Gaming-Graphi...B0CWS78Y5J

Thanks for Pointing me to these Cards.
So even for mid-range cards like the 4070 it is not possible to properly do a 19" 4U setup?

It seems that MSI Gaming Aero is not available over here in Europe, not even the MSI webstore does list it and the MSI products page only has a RTX 1650 Aero. It is also not listed on eBay.

I looked at OpenCL benchmarks and at the hashcat benchmark results postet in this forum before. For me it looked like the sweet-spot in GH/€ is 4060 followed closely by 4060 Ti and -- with a slighly larger Gap -- the 4070. The larger cards /4070 Ti+) had a significantly worse price-perfromance-ratio than these, which I why I am surprised that you recommend 4070 Ti Super.

The Gigabyte 4070 Ti Super AI TOP is about 1.000€ each. The cheapest 4070 Ti Super is about 830€. As both seem to have the same specs, that is ~170€ just for being blower style.

Looking at benchmarks here in the forum the 4070 has about 92/GH/s NTLM, the 4070 Super TI about 133 GH/s.
So compared to the non-blower 4070 this card has 1.45 the performance but 1.8 the price. Also this would mean that instead of 2 4070 I'd use 1 4070 Super Ti for the budget. That does not look like a good price-perfromance-ratio, does it?

There is a ASUS Turbo 4070 12GB GDDR6X which is blower style that is about 620€. Compared to the 4070 Ti Super AI TOP that would mean the AI Top is 1.45 the performance for 1.58 the price. So I guess 2x the ASUS Turbo 12G would be a better option than one 4070 Ti Super AI TOP, wouldn't it?

I do actually consider using a tower instead if I see that just for using blower style I pay ~ 200€ more (in each of the cases)

2. Relevant but not overly so, anything above x4 lanes should be enough to not make a huge difference in your performance. You should certainly always strive for the best possible, but as long as you have x4 lanes of at least 3.0, you should be fine.

Ok, so as 3.0 x4 is the same bandwidth as 4.0 x2, all of the mentioned boards would be fine, perfect.

Sticking to system ram >= combined VRAM should be fine and avoid any issues.

Good to know. Thanks.