Ah the pentium, aka 5-ium due to the penta- prefix. It is actually a nod from 4 to 5, but Intel wanted some cool name, and they decided penta + premium would sound cool, hence pentium.
But still, internally we call it i586, because that's the way it is. so is Pentium MMX which I reckon is called i686.
The years when Pentium came was a bit of an shitshow. As the article said, there were 7 companies producing 486 processors but after that the market was mostly Intel, AMD and little Cyrix. Then came socket-A vs. slot-A etc. Now looking back it seems like there was lot of changes in short period of time.
Another interesting episode "after the 486" was the switch from 32 bit to 64 bit, where Intel wanted to bury the ghost of the 8086 once and for all and switched to a completely new architecture (https://en.wikipedia.org/wiki/IA-64), while AMD opted to extend the x86 architecture (https://en.wikipedia.org/wiki/X86-64). This was probably the first time that customers voted with their feet against Intel in a major way. The Itanium CPUs with the new architecture were quickly rechristened "Itanic" and Intel grudgingly had to switch to AMDs instruction set - that's the reason why the current instruction set still used by all "x86" CPUs is often referred to as AMD-64.
Fun fact: Bonnel Atoms (D510 etc) were not affected by the meltdown vulnerability that plagued every Pentium processor since the 1995 Pentiums. These Atoms use purely in-order execution engines which kinda makes them supercharged 486s.
I remember those Cyrix chips well. We had a little shop where we would assemble boxes to spec. And hey, a 486 is a 486, we reasoned. They were cheap, ran cool, and just about as fast as the others.
I remember fondly the AMD K6/2 architecture. It was the CPU of a ultra-budget priced Compaq Presario laptop that got me through graduate school back in the day.
Some years later, back in my home country (Paraguay) I met a lady who had a side business being a VAR builder of desktop PCs. In my country, due to a lot of constraints, there was (and is) quite a money crunch and people tried to cheap out the most when purchasing computers. This gave rise to a lot of unscrupulous VAR resellers who built ultra-low quality, underpowered PCs with almost unusable specs at an attractive price while making a pretty profit. You could still get much better deals in both price and specs, but you had to have an idea about where to look.
Well, back to this lady. She said that during the early 2000s she was on the same line of business, selling beige box desktop PCs at the lowest possible prices. But she said that she loved the AMD K6 and K6/2 architectures because they provided considerable bang for the buck. The cost was affordable, and yet performance was good. Add some reasonable amounts of RAM and storage and you could have a well-performing PC at a good price. The downside, as she said, was that the processors tended to generate lots of heat and thus the fans had to be good. This was especially important in a very hot country like Paraguay. But the bottom line was that AMD K6 line enabled her to offer customers a good deal.
This made me appreciate what AMD did with K6. They really helped to bring good computers to the masses.
I indeed remember too the family of K6 chips and their Super Socket 7 motherboards. They were cheap and affordable, and allowed cpu upgrades to classical Socket 7 motherboards.
The peak of the Super Socket 7 performance CPUs was reached when AMD released the + versions of those chips, the K6-2+ and K6-3+. Those were initially designed for laptops with lower powerconsumption and some enhanced instruction set. But they quickly became common in typical overclockers setup.
I got myself a K6-3+ that I was able to overclock to around 600MHz, probably on an ASUS motherboard.
Back then AMD was fighting so much to get marketshare that you could order for free all types of merchandising from AMD like posters, stickers and CPU badges, and they would even ship it for free from US to Europe. I remember always bringing some to hacker meetings.
K6 was great at everything other than FP. Unfortunately for AMD, a year before its launch ID released Quake, for which the primary metric of performance was basically "how fast are you at FP". And Quake very rapidly became the common benchmark against which CPU performance was measured.
I was a poor kid building computers in the mid to late 90's. I tried everything I could NOT to use a true Pentium. My first build (coming from an upgraded Compaq 386DX) was an AMD 486 "DX4". I had a Diamond Stealth PCI VGA card and 16mb of DRAM. After that I tried a 233Mhz Cyrix 6x86. That chip was garbage. I had to run some software pentium emulation to get Cubase to run. I went 300Mhz Celeron after that. That was my first time trying the new SDRAM! After that I FINALLY got a legit Pentium III 400Mhz! I could go on and on as this is a lovely walk down memory lane and there's been some fun dips back into AMD Athlon/Ryzen/etc.
I remember a 120MHz Pentium Linux box arriving at a cottage in Crete, where, with the aid of a 56k USRobotics modem, we (my wife and I) worked remotely in 1995-6. She had a Mac SE/30 for her tourist guidebook work. She later upgraded to a 6100 PowerMac "pizza-box", various iMacs, G3/G4/G5, whereas I saved a quad-200MHz PentiumPro monster (Compaq Professional Workstation 8000, tricked up to 3GB RAM) from the skip. I regret taking that to the recycling centre many years later.
You then had the 486 DLCs which were even worse. you'd get companies that sold 386 and even 286 systems with '486' chips, constrained by slow, 16-bit buses, etc.
Nice nostalgic piece. I have a lot of fond "favorite chip" memories from that era.
Not to be too pedantic, I would contend that at the time, it was pretty clear to enthusiast what the differences were. Everyone in the industry was paying attention to 486s and the cost of a genuine intel chip. The FDIV bug was on every Evening News for weeks. AMD and Cyrix vs intel debates were common.
I agree that it is not obvious now that Pentium came after 486, but at the time, it was clear.
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[ 26.5 ms ] story [ 244 ms ] threadBut still, internally we call it i586, because that's the way it is. so is Pentium MMX which I reckon is called i686.
- AMD (K5/K6/K6-2/K6-III) - Intel (Pentium) - Centaur (IDT Winchip, later Via C3/C7/Nano) - Cyrix (6x86, 6x86MX) - Rise (mp6)
Some years later, back in my home country (Paraguay) I met a lady who had a side business being a VAR builder of desktop PCs. In my country, due to a lot of constraints, there was (and is) quite a money crunch and people tried to cheap out the most when purchasing computers. This gave rise to a lot of unscrupulous VAR resellers who built ultra-low quality, underpowered PCs with almost unusable specs at an attractive price while making a pretty profit. You could still get much better deals in both price and specs, but you had to have an idea about where to look.
Well, back to this lady. She said that during the early 2000s she was on the same line of business, selling beige box desktop PCs at the lowest possible prices. But she said that she loved the AMD K6 and K6/2 architectures because they provided considerable bang for the buck. The cost was affordable, and yet performance was good. Add some reasonable amounts of RAM and storage and you could have a well-performing PC at a good price. The downside, as she said, was that the processors tended to generate lots of heat and thus the fans had to be good. This was especially important in a very hot country like Paraguay. But the bottom line was that AMD K6 line enabled her to offer customers a good deal.
This made me appreciate what AMD did with K6. They really helped to bring good computers to the masses.
The peak of the Super Socket 7 performance CPUs was reached when AMD released the + versions of those chips, the K6-2+ and K6-3+. Those were initially designed for laptops with lower powerconsumption and some enhanced instruction set. But they quickly became common in typical overclockers setup.
I got myself a K6-3+ that I was able to overclock to around 600MHz, probably on an ASUS motherboard.
Back then AMD was fighting so much to get marketshare that you could order for free all types of merchandising from AMD like posters, stickers and CPU badges, and they would even ship it for free from US to Europe. I remember always bringing some to hacker meetings.
It wasn't much more than a year later that I was able to get a Pentium 100MHz for $2000. It's amazing how fast things progressed back then.
There was a mobile 266MHz Pentium MMX, Tillamook
And it appears there was a 300MHz version according to Wikipedia.
The author links to an example:
https://dfarq.homeip.net/ibm-486slc2-cpu-when-a-clone-isnt-a...
You then had the 486 DLCs which were even worse. you'd get companies that sold 386 and even 286 systems with '486' chips, constrained by slow, 16-bit buses, etc.
Sure AMD and a few others had back-seat answers, but Intel was literally driving the bus.
Not to be too pedantic, I would contend that at the time, it was pretty clear to enthusiast what the differences were. Everyone in the industry was paying attention to 486s and the cost of a genuine intel chip. The FDIV bug was on every Evening News for weeks. AMD and Cyrix vs intel debates were common.
I agree that it is not obvious now that Pentium came after 486, but at the time, it was clear.