What kind of graphics card should I choose to build a professional PDF XLS DOC password cracking device?

2024-04-15 11:22:56

This article is to share what graphics card to choose for professional password cracking equipment construction, and is designed to help experts specify and build cost-effective and energy-efficient workstations for password recovery workloads. When building a password recovery workstation, it's important to consider the cost of electricity, long-term reliability, and warranty coverage. In this article, we'll review the most common cooling solutions in today's GPUs and compare consumer-grade graphics cards to lesser-known professional ones.

Is the expertise in mining relevant?

At first glance, the workload of cryptocurrency mining may be similar to that of password recovery, and enticing experts learn from the experience of miners when building a password recovery rig. In fact, this method is not the best for a number of reasons. Mines are built for profit; Ideally, make a quick profit. These are often built in an open shell by available components that are rarely designed to withstand these types of workloads. Power consumption and power efficiency are often overlooked, while long-term reliability is not an issue if a given video card has already earned enough crypto cash.

While mining site-like systems can and are used by forensic experts, they are often considered expedient, even if they are used for months or years. Workstations built to meet digital forensics needs have different priorities, with energy efficiency, overall stability, long-term reliability, and warranty coverage being top priorities.

GPU cooling solutions

A typical modern video card uses a large heat sink and one or more fans for cooling. The design of the cooling solution determines where the hot air goes. Depending on the operating environment and workload type, different types of cooling solutions offer advantages over others.

Most consumer video cards use so-called "open-air" solutions. In this design, the fan blows air onto the radiator while hot air escapes from the sides of the radiator. Warm air falls on the motherboard and computer case. This solution works best in an open chassis or workbench if multiple video cards are installed.

A slightly different heatsink design places the fins parallel to the graphics card, thus blowing some of the hot air away from the computer case through the PCIe slot cover, while the rest of the air is still thrown into the case.

If you are using an open shell, there is no significant correlation between the orientation of the fins. If you're using multiple graphics cards in a closed case, this solution provides better cooling.

NVIDIA has developed a hybrid solution in its 3000 series Founders Edition graphics cards. The hot air is partially blown out of the chassis and partly blown to the computer's CPU fan and expelled through the computer's system fan.

Internally, this cooling system looks like this:

While this is a very good design from the point of view of a typical gamer and usually works fine if only one or two boards are installed in an enclosed case, the solution still doesn't work on workstations or rack cases where multiple video cards are installed side by side. To do this, NVIDIA has built a different type of cooling solution.

The idea between this cooling is shown on the slide below

First, take a look at the "insides" of a single-socket Nvidia RTX A4000 graphics card, where the cooling solution is disassembled:

這些卡設計用于在機架式服務器中運行。

露天風機和鼓風機設計之間的區別：

鼓風機式冷卻解決方案自然設計用于機架外殼：

Blowers vs. open-air GPUs – Summary

Purchase an open-air GPU if you:

• Plan to use a single GPU in the system.

• Use a graphics card in a well-ventilated chassis, preferably a full-tower or mid-tower chassis with adequate case fans, no obstructions to airflow, and a powerful cooling solution for the processor, SSD, and motherboard chipset.

• Need the best performance of your GPU and plan to buy a factory overclocked GPU or overclock it yourself.

• A system with the lowest possible noise output is needed without the need for passive cooling

Purchase a blower-style GPU if you:

• Plan to use your GPU in a small form factor, such as mini-ITX, provided that the graphics card heatsink fits into the case. For very small cases, a low-profile graphics card is the only option, which will cause you to miss out on a high-performance GPU.

• Need to run multiple GPUs in a small space and/or plan to use high-speed interconnects such as Nvidia's NVLink.

• Having a processor or SSD, working with an open-air system in terms of temperature. This is important if you plan to overclock your processor, as even a single-digit increase can lead to system instability and thermal throttling if the temperature rises.