The K8: AMD Moves To 64 Bits
K8 was the first x86 processor compatible with 64-bit addressing. The architecture had other advantages such as an integrated memory controller. AMD has released a veritable army of K8-based processors since then, but we’ll concentrate on the models intended for the mainstream: the Athlon 64s. In practice, the Opteron (the server version), Athlon 64 FX (high-end) and Turion 64 (for mobile PCs) are very closely related. In general, they differ only in the management of the memory controller and cache memory, plus the type of memory used.
|Maximum memory||1 TB||1 TB|
|L1 cache||64 KB + 64 KB||64 KB + 64 KB|
|L2 cache||1,024 KB (CPU frequency)||512 KB (CPU frequency)|
|Clock frequency||1,800-2,400 MHz||1,800-2,600 MHz|
|memory controller||DDR-400, 1 channel||DDR2-667, 2 channel|
|FSB||800 MHz (HTT)||1,000 MHz (HTT)|
|SIMD||MMX, Enhanced 3DNow!, SSE, SSE2||MMX, Enhanced 3DNow!, SSE, SSE2, SSE3|
|Fabrication process||130 nm||90 nm|
|Number of transistors||105.9 million||81.1 million|
|Power consumption||89 W (TDP)||62 W (TDP)|
|Voltage||1.5 V||1.25-1.4 V|
|Die surface area||193 mm²||103 mm²|
|Connector||Socket 754||Socket AM2|
Athlon 64 processors still use a PR number to indicate their ranking in the product range and there are many different versions, which generally differ in terms of cache memory and/or fabrication process. We highlighted only two models, but there are a dozen or so different K8 versions for the standard Athlon 64 alone.
Where the intel article seemed to overshadow intel's little victories, this article seems to gloss over AMD innovation (though i'll admit that i didn't recall the bit about the Intel chip, either the pentium or pentium pro, that gave incorrect values for mathmatical equations)
Both articles really need alot more detail added. As i've actually ranted about the history i'm reffering to in the comments section of the intel article as well as many other's i won't re-hash it.
This is like viasat history - only more specific and technical
AMD 486 @120 Mhz was making my friends that bought an early Pentium red with envy.
Someone gave me a AMD K5 system.
Thanks for the article.
I have quite a few chips from both makers, including the AMD 40MHz 386, and an Intel 386 & 387 33MHz cpu's, which are quite scarce...