The word 'strict' has no bearing on the GB 'Memory support lists'; here's the deal:
The support list is done when the board design is finalized to production, and almost never updated thereafter. When this is done, somebody with some degree of engineering talent, and knowledge of the hardware involved, sits down with a collection of RAM they have 'lying about', mostly samples provided by manufacturers who have a vested interest in getting their products on the list. He tosses aside the candidates he knows won't work, for one reason or another, on that particular platform, and goes to work setting up and testing the remainder. If he can get it working - it goes on the list; if not, not! I imagine he stays at it until he reaches some arbitrary number, or until his boss says "you got other, important work to do - GIT!"
This leaves a large number of issues for the user:
Being 'on the list' does not guarantee 'instant' compatibility for your use; the list provides no detail regarding "did it just come up and run with a 'Load Optimized?'', "did he have to enable XMP and it worked?", or, "did he (with 'inside' knowledge of the MOBO and BIOS) have to 'diddle around' a half-hour to set it up?"
Not being on the list certainly does not imply it won't work! I have built a little Excel 'tool' for evalution and comparison of RAM; I went to update its contents just to reflect what's available in 2G x 3Channel from NewEgg, and, if memory serves me, wound up with eighty-some odd part numbers! Considering the ungodly amount of MOBOs GB makes, this would require a full-time staff of ten, even assuming the samples were consistently available - else another ten could work all day every day 'hunting down' samples! Your RAM part's absence may simply reflect that it was released after the board...
Many parts you'll see on the list are from unfamiliar makers - they may be available in every quick-service gas-station in Taiwan, but simply aren't available in your market...
Kind of late tonight - I'm nuts, and have to sleep regular hours. Manic-depressive: insomnia leads to mania, which leads to more insomnia, and more mania - and pretty soon I'm prowling around on the ceiling, wearing my tin-foil hat
Tomorrow, I will examine a bunch of posts, both here and at TweakTown, and find out if that is a reliable 'go', or perhaps I can find something else that has proven itself... Purchasing in the UK?
I was staggered by their site, and the level of information available - should have know, they are mainly 'server-centric'!
I've been pissing and moaning forever about "why is this damned SPD stuff a freaking secret?" - take a peek at THIS!! Now why can't they do this with their Crucial branch??
I think you're getting a deal here because those are EOL'd (end-of-life); they either are discontinued, or are in the process of being discontinued; Micron's stuff (when you can even find a source) is usually pretty 'pricey'!
Oh, and, BTW, the whole 1156/1366 'pickiness' about memory is not a platform flaw - the problem 'belongs' to the MOBO and memory manufacturers; the huge number of posted problems occur because, though Intel CPUs only support 800, 1066, and for some (most, now...) 1333, huge numbers of (gullible) people are paying huge amounts of money for uselessly faster memory - when memory speed on these platforms does not 'scale' to subjectively noticeable performance gains...
US - mid-west, near Milwaukee Wisconsin, just off the Great Lakes - Lake Michigan... Besides work, spent some time back & forth there, trying to import (or maybe manufacture here...) these:
Perhaps you've seen some 'scooting around' there! Was made to take Cortina & Scorpio parts; pictured prototype, I re-engineered to take US Fox Mustang front-end, Merkur rear, Renault Fuego transaxle, and shoveled in a '62 Buick 215 aluminum V-8, bored and stroked to 266 (4.4L) - tooling for which was sold in '64 or '65 to Leyland - basis for the TR8 and current Rover...
Used to joke all the time about the two things seperating US and UK were the Atlantic ocean, and the English language!!