Sorry if I've made a thread about his type before. Anyway, I've narrowed it down to 2 types--ILE-Ti and EIE-Fe and I'm going to say why he couldn't be EIE-Ni, LIE, or LSE.
facts for ILE-Ti:
he's pretty practical
he's not real sociable
he's definitely Ti valuing, his organizational style isn't gamma or delta, i'm pretty sure there are almost no gamma or deltas working under him
he had that kind of anti-social lying/con-artistry that ILE-Ti before nvidia became big
far from a perfectionist, is fine with keeping problems open forever, without any resolution for him (that's really the biggest fact pointing towards ILE-Ti over EIE-Fe IMO)
facts for EIE-Fe:
obviously a 3w4 in the enneagram--came from very humble beginnings, worked hard, made money in ping ball tournaments etc., etc. he was driven to succeed.
needed to build up a huge company (ILE-Ti more likely to keep their businesses small)
seems Ej temperament, more forceful than ILE-Ti tend to be, has more authoritarian leadership style (ILE-Ti can be somewhat authoritarian, but rarely like Jensen is reported to be; Kimberly Kane is really one of the best examples of an outwardly aggressive authoritarian ILE-Ti; my 4th grade teacher was authoritarian ILE-Ti, but she wasn't very outwardly aggressive/downright physically combative like Kimberly Kane was).
dresses well, cares about his image
cares a bit much about his company's image to be an ILE-Ti.
not quirky/eccentric-seeming in the sense that ILE-Ti scientists like Freeman Dyson and Einstein were; seems more controlling and domineering like steve jobs was.
wanted to be an alpha male (all the patents belong to him even though he didn't actually invent or engineer the things, started company with a few friends who did more engineering, but jensen did the business side)
knows what the public wants (ILE-Ti do as well, but Jensen knows beyond what would be expected by most ILE-Ti) and will bear
takes fewer risks, keeps things steady (ILE-Ti take way more risks)
evidence against EIE-Ni:
he's not very impulsive, he's more reasonable/logical like EIE-Fe tend to be.
he doesn't get easily worn out--EIE-Fe have more physical endurance
less sociable, more formal, more impersonal, controlled like an EIE-Fe
keeps his emotional state under control better than an EIE-Ni would.
has better visuo-spatial ability than would be expected for EIE-Ni... EIE-Ni aren't real likely to have degrees in electrical engineering and to pursue work in it without someone else creating structure over them, at least not as much as EIE-Fe... EIE-Fe work better with tools than EIE-Ni.
evidence against LIE and LSE:
engineering really isn't an LIE thing, and he started a graphics company.
his organization suggests Ti-valuing more than Te.
probably doesn't have Gamma and Deltas working under him
knows well what the public wants, tries to deliver it.
LIE are more conservative than nvidia was. While nvidia wasn't really very creative, they did utilize new technologies that they could market to the public (Merry quadra indicated), rather than being skeptical of them and as such having an individual preference for really old things like an LIE would rather than what the public would want. I have a hard time believing a Gamma or Delta could market as successfully as nvidia did.
I wish I could V.I. him. He doesn't really auditorily identify as an ILE-Ti from what I remember hearing from him; EIE-Fe can be pretty soft-spoken (although they can be VERY loud when they're in an atmosphere they feel comfortable in) and that's how I seem to remember his voice as trying to create an intimate atmosphere in a talk he had with i think it was some stanford engineering students, grads/undergrads.
Based on the above, my guess is that he was a very smart, driven EIE-Fe, if I had to narrow it down to one... mainly based on his 3w4ness and his exact awareness of what the public wants and will bear and not doing commercially risky things other than the GeForce FX (ILE-Ti take more risks and don't have as much foresight as EIE-Fe, e.g., Bill Gates, Steven Spielberg). ILE-Ti Bill Gates microsoft did several risky things that Bill Gates didn't worry too much about being unpopular with the public, AFAIK Bill Gates didn't really keep an eye on the products like Jensen and EIE-Fe Steve Jobs did. Another thing pointing to Jensen being EIE-Fe is that he was actually more interpersonally aggressive than Bill Gates and his conflict with Bill Gates or someone at microsoft about the NV2A in the original Xbox; if Jensen were an ILE-Ti he probably would've cooperatively come to terms, a mutually beneficial deal more easily with Bill Gates. ILE-Ti also allow the end-user more options, EIE-Fe Steve Jobs took away things, kept things closed, streamlined, nvidia has taken away options has time has gone on... that leads me to believe EIE-Fe over ILE-Ti.
Whaddya think about this?