100GHz CPU with 1GB L2 cache in 18 months? No way?

[Deviant]

Well I don't really believe it, but here's a story that will break headlines if it turns out to be true.

http://www.the-inquirer.com/?article=8405

[_N_]

cool, if it's true, great,

but look at it this way.

Intel, AMD = billions of dollars to make CPU's

some uni in China = not much money, but probably pretty smart people,.

I think they designed a CPU on paper, which can't be made,

but if they can show me the 5GHz one, I will be impressed.

The ironic thing is that China, US's enemy will end up selling CPU's to the US and make a profit out of it, even tho US has been the main CPU maker for the last 30 years.


/edit,

some facts:
Pin compatible with the Pentium 4
128-bit technology - but wait, the P4 is a 32bit CPU working in a 32bit system, wouldn't you need a completley different system to run 128 bit?

100GHz, 90 nm (nanometer), 1Gb level 2 cache

on 90nm a chip with 1Gb of cache would be very big in size, and would cost a lot,
secondly, 100GHz, that's great, but what will it compare like to our CPU's, just like the P4 2GHz = 1.6GHz Athlon,
but this CPU at 100GHz could equal only 2GHz P4 in real life perfomance, see my point?

[Method]

if it had a 1gb cache youd have to pay a ****load for it. Eg macs have a 2mb cache i think thats why they cost so blimin much!.


And it could be like intel, high clock speeds but not really that fast, amd low clock speed and as fast as the higher clocked intels.

Maby this is a superclocked but super slow cpu.. lol anyway im thinking to unrealisticly and too much.

[Tiggerz]

partly rubbish and partly true.

I have seen chips running at very high clock speeds before. Usually, tho, they are using a very high clock speed but have reduced the size of the instructions. The trick would be to get a high clock speed and be able to process x86 instructions. This is generally not possible because x86 instructions are very complex.

For example, I have seen a 5Ghz CPU but it was only processing the equiv of 1 x86 instruction per clock which really makes it a 1Ghz cpu in performance.

ALso a Gb of cache would be hugely expensive to create. The wafer would be huge and the yield almost nil.

[_N_]

no need to use the word Mac, (they are just overpriced computers cause they use CPU's which are not sold in very big numbers)

just look at Xeon's with their large L2 cache and you'll see that they cost heaps.

[neoprint]

not to mention the size. does anyone here think that a gig of cache will fit in an area that the socket has? methinks not.

i see this is by the inquirer. you DO know that they arent exactly renowned for being correct don't you?

but, if it is true, then mewants one!

[Deviant]

I'm picking that if 512kB cache (Barton) is approximately half the size of the current core, then the we need 2000x0.5xcore size to make 1GB, or 1000x the core size it is now. That would take up about the side of my case. Sh1t I better get started on a new water block, and convert the side of my house as a radiator. Maybe save a million to buy the CPU also. How do they make a CPU that size pin compatible with a P4. Me thinks they meant 1MB of L2 cache not 1GB.

[sparkles]

Originally posted by Deviant
Me thinks they meant 1MB of L2 cache not 1GB.

now that makes a lot more sense.

[dumass]

Not to mention the seek time of 1GB of cache would take ages.

That is another reason why L1 cache is kept small, so it can run at the same speed of the CPU, and the access time is quick (i.e. it would have to wait a hell of alot of cycles to find something in 1GB of cache.

And the other point is will it support SSE2, 3Dnow etc. instructions, or will it be like the VIA 1GHz passive cooled CPU, slow as.

[Deviant]

Originally posted by dumass
Not to mention the seek time of 1GB of cache would take ages.

That is another reason why L1 cache is kept small, so it can run at the same speed of the CPU, and the access time is quick (i.e. it would have to wait a hell of alot of cycles to find something in 1GB of cache.

And the other point is will it support SSE2, 3Dnow etc. instructions, or will it be like the VIA 1GHz passive cooled CPU, slow as.

Do some more reading up on memory, and you will find that the seek time is constant, no matter how much ram you have. The point of RAM , is that data can be read every clock cycle, or twice for DDR, 4x for DDR2.

You might be mixed up with cache hits/misses lookup table or algorythems they use to get data out of a cache, but even then the larger the better.