PCPer Mailbag #40 - 4/20/2018

Subject: Editorial | April 20, 2018 - 09:00 AM |
Tagged: video, Ryan Shrout, pcper mailbag

It's time for the PCPer Mailbag, our weekly show where Ryan and the team answer your questions about the tech industry, the latest and greatest GPUs, the process of running a tech review website, and more!

On today's show:

00:38 - Obsession over NUCs?
02:55 - Changing TDPs/power efficiency over time?
04:05 - Router buying tips?
07:46 - AMD StoreMI?
10:15 - Thunderbolt 3 for Ryzen/Threadripper?
12:09 - Mutilating a power supply?
13:50 - Best mobile browsing/writing device for $300?
16:55 - Differences overclocking Ryzen vs. Intel?

Want to have your question answered on a future Mailbag? Leave a comment on this post or in the YouTube comments for the latest video. Check out new Mailbag videos each Friday!

Be sure to subscribe to our YouTube Channel to make sure you never miss our weekly reviews and podcasts, and please consider supporting PC Perspective via Patreon to help us keep videos like our weekly mailbag coming!

Source: YouTube

PCPer Mailbag #39 - 4/13/2018

Subject: Editorial | April 13, 2018 - 09:00 AM |
Tagged: video, Ryan Shrout, pcper mailbag

It's time for the PCPer Mailbag, our weekly show where Ryan and the team answer your questions about the tech industry, the latest and greatest GPUs, the process of running a tech review website, and more!

On today's show:

00:38 - 6-bit monitors with HDR?
03:43 - Threadripper 2800X?
06:03 - When to replace power supply?
08:07 - Secured Wi-Fi networks with shared password?
09:38 - Universal VR standard?
12:46 - Samsung 960 successor?
13:55 - Hybrid Memory Cube technology?
16:37 - GeForce Partner Program updates?
19:10 - Game-optimized GPU drivers?

Want to have your question answered on a future Mailbag? Leave a comment on this post or in the YouTube comments for the latest video. Check out new Mailbag videos each Friday!

Be sure to subscribe to our YouTube Channel to make sure you never miss our weekly reviews and podcasts, and please consider supporting PC Perspective via Patreon to help us keep videos like our weekly mailbag coming!

Source: YouTube

PCPer Mailbag #38 - 4/6/2018

Subject: Editorial | April 6, 2018 - 09:00 AM |
Tagged: video, pcper mailbag, Josh Walrath

It's time for the PCPer Mailbag, our weekly show where Ryan and the team answer your questions about the tech industry, the latest and greatest GPUs, the process of running a tech review website, and more!

On today's show, Josh survived a home invasion so that he could answer your questions:

01:38 - Battery charging strategy?
04:03 - SSD endurance for video editing?
06:38 - Monitor with both G-SYNC and FreeSync?
08:53 - CPU cache size limitation?
13:39 - Silicon brick wall?
17:30 - Feeding the racing addiction?
20:03 - Breaking and entering?

Want to have your question answered on a future Mailbag? Leave a comment on this post or in the YouTube comments for the latest video. Check out new Mailbag videos each Friday!

Be sure to subscribe to our YouTube Channel to make sure you never miss our weekly reviews and podcasts, and please consider supporting PC Perspective via Patreon to help us keep videos like our weekly mailbag coming!

Source: YouTube
Author:
Subject: Editorial
Manufacturer: PCPerspective

The Experiment...

Introduction

OK, call me crazy (you wouldn’t be the first) but this is something I’ve wanted to try for years, and I bet I’m not the only one. Each time a new power supply comes across the lab bench with ever increasing output capacities, I find myself thinking, “I could weld with this beast.” Well the AX1600i pushed me over the edge and I decided to give it a go; what could possibly go wrong?

2-Side-view.jpg

133.3 Amps on the +12V outputs!

The Corsair AX1600i Digital power supply can deliver up to 133 Amps on the combined +12V rails, more than enough amperage for welding. There are dozens of PC power supplies on the market today that can deliver 100 Amps or more on the +12V output, but the AX1600i has another feature that might help make this project a success, the ability to manually set current limits on the +12V outputs. Thanks to the fact that the AX1600i is a digital power supply that allows manually setting the current limits on the +12V outputs via the Corsair Link data acquisition and control software, I might be able to add the ability to select a desired amperage to weld with. Yes!

Just because the AX1600i “can” deliver 133A doesn’t mean I want that much current available for welding. I typically only use that much power when I’m welding heavy steel pieces using ¼” rod. For this experiment I would like to be able to start out at a lot lower amperage, and I’m hoping the Corsair Link software will provide that ability.

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Stick Welding with a PC Power Supply!

My first thought was to try to adapt a TIG (Tungsten Inert Gas) welder for use with the AX1600i. I figured using a TIG torch (Tungsten electrode shrouded with Argon gas instead of a flux coated rod) might give better control especially at the lower voltage and currents where I plan to start testing. TIG welders are commonly used to weld small stainless steel parts and sheet metal. But then I remembered the TIG welder power supply has a high voltage pulse built-in to initiate the plasma arc. Without that extra kick-start, it might be difficult to strike an arc without damaging the fine pointed tip of the Tungsten electrode. So I decided to just go with a conventional stick welding setup. The fact that PC power supplies put out DC voltage will be an advantage over the more common AC buzz-box arc welders for better stability and producing higher quality welds.

Modifications

Obviously, trying to convert a PC power supply into an arc welding power supply will require a few modifications. Here is a quick list of the main challenges I think we will have to overcome.

•    Higher capacity fan for better cooling
•    Terminate all the PSU’s +12V cables into welding leads
•    Disable the Short Circuit protection feature
•    Implement selecting the desired current output
•    Strike and maintain a stable arc with only 12 volts

Please continue reading our write up about Arc Welding with a PC Power Supply!!!

PCPer Mailbag #37 - 3/30/2018

Subject: Editorial | March 30, 2018 - 09:00 AM |
Tagged: video, pcper mailbag, Allyn Malventano

It's time for the PCPer Mailbag, our weekly show where Ryan and the team answer your questions about the tech industry, the latest and greatest GPUs, the process of running a tech review website, and more!

On today's show, Allyn is back to tackle your questions:

00:32 - Speed vs. timings for Ryzen memory?
05:35 - Usage "chronometer" for GPUs?
11:58 - SanDisk Ultra 3D vs. Samsung 860 EVO for boot drive?
12:48 - 3:2 aspect ratio monitors like the Surface Studio?
17:05 - Optane 800p vs. Samsung 960 EVO vs. 960 Pro?

Want to have your question answered on a future Mailbag? Leave a comment on this post or in the YouTube comments for the latest video. Check out new Mailbag videos each Friday!

Be sure to subscribe to our YouTube Channel to make sure you never miss our weekly reviews and podcasts, and please consider supporting PC Perspective via Patreon to help us keep videos like our weekly mailbag coming!

Source:

PCPer Mailbag #36 - 3/23/2018

Subject: Editorial | March 23, 2018 - 09:00 AM |
Tagged: video, pcper mailbag, Josh Walrath

It's time for the PCPer Mailbag, our weekly show where Ryan and the team answer your questions about the tech industry, the latest and greatest GPUs, the process of running a tech review website, and more!

On today's show:

00:49 - User-replaceable batteries?
04:06 - Block GPUs from crypto mining?
07:52 - Custom game resolutions?
11:26 - What makes AIB GPUs special?
15:01 - Spectre patch for Ryzen?
16:27 - Security flaw disclosure windows?
20:04 - Ryzen CPU coolers?
23:14 - Thunderbolt 3 royalty free?
24:54 - SSDs replacing RAM?
27:19 - Gamepad and flight stick reviews?
27:59 - VR graphics and upscaling?

Want to have your question answered on a future Mailbag? Leave a comment on this post or in the YouTube comments for the latest video. Check out new Mailbag videos each Friday!

Be sure to subscribe to our YouTube Channel to make sure you never miss our weekly reviews and podcasts, and please consider supporting PC Perspective via Patreon to help us keep videos like our weekly mailbag coming!

Source: YouTube

PCPer Mailbag #35 - 3/16/2018

Subject: Editorial | March 16, 2018 - 09:00 AM |
Tagged: video, Ryan Shrout, pcper mailbag

It's time for the PCPer Mailbag, our weekly show where Ryan and the team answer your questions about the tech industry, the latest and greatest GPUs, the process of running a tech review website, and more!

On today's show:

00:50 - Rumble gaming chairs?
02:18 - SSD for VMs?
04:08 - Playing old games in a virtual machine?
05:54 - Socketed GPUs?
09:08 - PC middlemen?
11:02 - NVIDIA tech demos?
13:10 - Raven Ridge motherboard features?
14:45 - x8 and x16 PCIe SSDs?
17:50 - Ryzen 2800X and Radeon RX 600?
19:53 - GeForce Partner Program?
21:14 - Goo goo g'joob?

Want to have your question answered on a future Mailbag? Leave a comment on this post or in the YouTube comments for the latest video. Check out new Mailbag videos each Friday!

Be sure to subscribe to our YouTube Channel to make sure you never miss our weekly reviews and podcasts, and please consider supporting PC Perspective via Patreon to help us keep videos like our weekly mailbag coming!

Source: YouTube
Author:
Subject: Editorial
Manufacturer: AMD

Much Ado About Nothing?

We live in a world seemingly fueled by explosive headlines. This morning we were welcomed with a proclamation that AMD has 13 newly discovered security flaws in their latest Ryzen/Zen chips that could potentially be showstoppers for the architecture, and AMD’s hopes that it can regain lost marketshare in mobile, desktop, and enterprise markets. CTS-Labs released a report along with a website and videos explaining what these vulnerabilities are and how they can affect AMD and its processors.

amd_01.jpg

This is all of course very scary. It was not all that long ago that we found out about the Spectre/Meltdown threats that seemingly are more dangerous to Intel than to its competitor. Spectre/Meltdown can be exploited by code that will compromise a machine without having elevated privileges. Parts of Spectre/Meltdown were fixed by firmware updates and OS changes which had either no effect on the machine in terms of performance, or incurred upwards of 20% to 30% performance hits in certain workloads requiring heavy I/O usage. Intel is planning a hardware fix for these vulnerabilities later on this year with new products. Current products have firmware updates available to them and Microsoft has already implemented a fix in software. Older CPUs and platforms (back to at least 4th Generation Core) have fixes, but they were rolled out a bit slower. So the fear of a new exploit that is located on the latest AMD processors is something that causes fear in users, CTOs, and investors alike.

CTS-Labs have detailed four major vulnerabilities and have named them as well as have provided fun little symbols for each; Ryzenfall, Fallout, Masterkey, and Chimera. The first three affect the CPU directly. Unlike Spectre/Meltdown, these vulnerabilities require elevated administrative privileges to be run. These are secondary exploits that require either physical access to the machine or logging on with enhanced admin privileges. Chimera affects the chipset designed by ASMedia. It is installed via a signed driver. In a secured system where the attacker has no administrative access, these exploits are no threat. If a system has been previously compromised or physically accessed (eg. force a firmware update via USB and flashback functionality), then these vulnerabilities are there to be taken advantage of.

amd_02.jpg

In every CPU it makes AMD utilizes a “Secure Processor”. This is simply a licensed ARM Cortex A5 that runs the internal secure OS/firmware. The same cores that comprise ARM’s “TrustZone” security product. In theory someone could compromise a server, install these exploits, and then remove the primary exploit so that on the surface it looks like the machine is operating as usual. The attackers will still have low level access to the machine in question, but it will be much harder to root them out.

Continue reading our thoughts on the AMD security concerns.

PCPer Mailbag #34 - It's Pronounced "Burger"

Subject: Editorial | March 9, 2018 - 09:00 AM |
Tagged: video, pcper mailbag, Josh Walrath

It's time for the PCPer Mailbag, our weekly show where Ryan and the team answer your questions about the tech industry, the latest and greatest GPUs, the process of running a tech review website, and more!

Josh takes the hot seat this week, so please try to constrain yourselves:

00:37 - Ryzen APUs a target for crypto miners?
03:07 - Replacing old AT power supply with ATX?
04:24 - M.2 SSD performance: motherboard vs. PCIe adapter?
05:47 - Max length for a USB cable?
07:07 - SUPoX motherboards absent from US market?
10:11 - Global Foundries able to hit 7nm without Samsung?
14:38 - What's so super about a supa-pipe?
15:54 - Josh's best and worst burger experiences?
18:19 - Josh's question for the audience?
19:03 - Josh vs. Ryan: FIGHT!

Want to have your question answered on a future Mailbag? Leave a comment on this post or in the YouTube comments for the latest video. Check out new Mailbag videos each Friday!

Be sure to subscribe to our YouTube Channel to make sure you never miss our weekly reviews and podcasts, and please consider supporting PC Perspective via Patreon to help us keep videos like our weekly mailbag coming!

Source: YouTube

PCPer Mailbag #33 - 3/2/2018

Subject: Editorial | March 2, 2018 - 09:00 AM |
Tagged: video, Ryan Shrout, pcper mailbag

It's time for the PCPer Mailbag, our weekly show where Ryan and the team answer your questions about the tech industry, the latest and greatest GPUs, the process of running a tech review website, and more!

On today's show:

00:30 - PCPer gear!
01:06 - External Thunderbolt 3 enclosure for something other than GPU?
02:55 - SoCs to replace desktop CPUs and GPUs?
05:35 - AMD EPYC server marketshare?
08:15 - Optane vs. NVMe with Threadripper CCX latency?
10:33 - Using USB-C laptop charger with smartphone?
12:39 - Spectre/Meltdown security concerns for everyday user?
14:44 - NVIDIA architecture names?
18:06 - Where are all the DirectX 12 PC games?
19:58 - 12TB Western Digital Reds?

Want to have your question answered on a future Mailbag? Leave a comment on this post or in the YouTube comments for the latest video. Check out new Mailbag videos each Friday!

Be sure to subscribe to our YouTube Channel to make sure you never miss our weekly reviews and podcasts, and please consider supporting PC Perspective via Patreon to help us keep videos like our weekly mailbag coming!

Source: YouTube