Category - Basics

Real laboratory tests of thermal pastes on igor’sLAB – Part 2 – First comparative measurement with 2 expensive pastes

Yesterday we already had the big theoretical part, today we are doing a practical measurement with two selected pastes, whereby the paste that is nominally better on the data sheet is actually the “worse” one in the test and vice versa. Of course, the factor of potential long-term durability also plays a role, which may put the result [...]


The big radiator material test: Radicooler, Richer-R and Magicool including purchase warnings and price-performance winners | Part 3

I’ve now reached part three and it’s time to briefly summarize the first two articles and, above all, to evaluate the reactions of the manufacturers, or rather their silence. As the case may be. Today’s test is about Radicooler (Qingdao YTeng Electronic Technology Co., Ltd.) and Magicool (Qingdao Magicool Electronic Technology Co [...]


How accurate are my material analyses? Calibration is mandatory!

Of course, we remember my last measurements on the radiators and the respective material analyses, some of which showed different things than the customer (or manufacturer) actually expected. Apart from the fact that alloys are often not 100% homogeneous, major deviations should of course not occur. Yes, trace elements below one wt% are more of a [...]


The big radiator material test: Between promise, reality and the forbidden – Water Cooling tested more in Detail! | Part 1

No, I’m not going to test the cooling performance of radiators for PC cooling today, but I am going to take a closer look at the first six manufacturers and their current models to see whether they really do contain exactly what the marketing advertises and the customer buys in good faith in some cases. In the first part, I obtained [...]


UPRtek MK550T Spectroradiometer presented and in use – Upgrade of our monitor test setup and basics of measurement technology

I’ve been officially testing monitors at Igor’sLab for almost two years now. I started out quite rudimentary with a very cheap colorimeter, the SpyderX and a mixture of DisplayCal and the SpyderX software. Everyone starts small, of course. The whole thing then developed quite quickly and we gradually upgraded and managed to get [...]


The Ultimate Thermal Paste and Pad Compendium: Application, Ingredients, Manufacturing, Optimization, Aging, Profit Margins and Marketing

Today I would like to dispel a few myths and, above all, explain why thermal compound is not just about the fillers and why there is a lot of marketing and even more inconsistencies and untruths in this gold-digger business. The article is also intended to raise awareness and help to separate honest and diligent suppliers from third-party [...]


The “secret” behind NVIDIA’s sophisticated telemetry: the role of Buckets, Speedo and Continuous Virtual Binning (CVB)

I had already written a very similar article almost a year ago about the binning of the GeForce RTX 4070 and the difference between MSRP and OC cards. However, the theoretical part on the second page was somewhat neglected, very wrongly in my opinion. The launch of the super cards is coming up soon and the question is always being asked as to how [...]


NVIDIA’s connector story: EPS vs. 12VHPWR Connector – Unfortunately, good doesn’t always win, but evil wins more and more often (insights)

After numerous articles, explanations, and follow-up tests, today we’re taking a different approach. I have three intriguing topics for you: the possible origin story of the 12VHPWR connector, the deliberate ignorance of the originally intended 8-pin EPS connector, which continues to prove its resilience against defeat in power supplies and [...]


Smoldering Headers on NVIDIA’s GeForce RTX 4090 – New Insights, Measurements and (Un)known Causes of the 12VHPWR and 12V-2×6 Issue | Update

Today’s article is the result of several months of laboratory work, extensive measurement series, development work, and constant cross-checking. The matter of the 12-volt connectors is unfortunately so complex that I had to look for a new approach to complete the picture. And no, there isn’t THE one cause, but always a causal chain of [...]


Dangerous pitfalls when buying online: Dropshipping explained simply and why the customer still has the upper hand

Today’s article refers to the two articles already published and linked again in the footer about the unsuccessful purchase of an item declared to be in stock and the subsequent hurdles for the customer, which should actually not be any, because here the process is very clearly regulated by law. But since most customers do not know the [...]


Power Supply in Graphics Cards explained – Switching Voltage Regulators, PWM Controler, true Phases and the annoying “Coil Whining” | Reminder

I wrote today’s article less than a year ago, so it’s not really “retro” yet, but somehow it’s time to bring it back up in this section on Saturday. I receive so many letters and enquiries on the subject that I think this article simply deserves to be here, and it certainly takes some of the pressure off me because I [...]