Recent content by TiN

This is interposer for Intel's VRTT power testing tool. Imagine a programmable DC load+oscilloscope+signal generator thing that has PGA-style pins. Motherboard manufacturers and Intel use VRTT as a power delivery testing tool to verify DC-DC design and motherboard power design before actual CPUs...

Wow, didn't expect this really :(

Interesting how CCX dies seem to have gold plating , most likely for soldering to IHS, while chipset die just usual silicon color, perhaps just for usual PCM paste :)

I'd love 6 month leadtimes on chips, would be heaven. Right now leadtimes are well over a year, sometimes even over 2 years for STM32 MCUs, FPGAs, CPLDs, ADC/DAC chips.

Based on looks of it, there is huge Cryomech pulse tube cooler (PT407?), which would still require big 7-10kW helium compressor, powered by 3-phase electric, dedicated waterchiller of similar size. Then Helium3 gas supply and all auxilary stuff for it. All in all, still a $M price tag and major...

No teardown? :)

No teardown :(

How would I know? I don't even have any 30*0 card :D . I've seen enough of 3Dmarks in last 10 years, haha. But to your point, I kept repeating on oc guides and posts, that high clocks do not mean best performance. Like KPE 1080Ti running 50MHz less than competitor card in same benchmark but...

Facepalm. At least 10 years there are news of NVIDIA cards overclocking to hell with 1069mV voltage. Somehow news writers can't grasp the fact, that software reported voltages are almost never correct when doing overclocking. Just didn't expect this from TPU... :kookoo: 10750 MHz then, or 10.75...

Let's call all proccessors Core i7's then :D

POSCAP is registered brand/trademark name for Panasonic's line of capacitors. https://industrial.panasonic.com/ww/products/capacitors/polymer-capacitors/poscap Like "Core i7" for some Intel processors.

100k oscilloscope or 10 GHz oscilloscope is not required again to do power delivery network analysis of the VGA card. It is required for signal integrity measurements and verification, such as that pretty PAM4 eye diagram everybody saw on marketing presentation slides or for testing PCIe 4.0...

I still missing how GPU architecture or GPU design matter here? One can assume it's magic oompa-loompa inside chip doing the math, and it would be same either way, as soon as you need (can measure) how many amps and what voltage margins loompa's need to stay happy. That is number one test to be...

Do tell more :) Though there is no much need for highest precision equipment to be able on capturing bode plot and response of relatively slow DC-DC converter that is used on 3080/3090 GPUs here. One do need decent differential probes, injector or high-speed load and good scope or bode plot...

Whole article is based on speculations of speculations. First of all, high-current DC-DC PDN (power delivery network) is real challenge, and indeed must use proper decoupling. However it does not mean that use of POSCAP/SPCAP or MLCC is the best in every case. Much more depends on transient...