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Reading the fancy AMD ####+ names

by SleepyChoco / July 30, 2007 6:10 PM PDT

AMD processors have really fancy numbers and names. How do you read their speed in Ghz?

How fast is a "AMD 64 X2 4400+" in Ghz???

and... what if the processor is an AMD Sempron? Or any other AMD, do the numbers still apply to the same speed?

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GHz doesn't matter much anymore...
by John.Wilkinson / July 31, 2007 12:29 AM PDT

While GHz used to be the primary measurement for the general consumer to differentiate processors it's not truly beneficial anymore. You can buy a 2.4GHz processor that is considerably faster than a 3.2GHz processor, or vice versa, and that's furthered with the advent of dual-core processors becoming the mainstay. The only way to truly determine how well a processor performs is to check the CPU charts, such as this one from Tom's Hardware. Ignore the numbers, which AMD and Intel are now trying to distance themselves from, and follow the charts.

Hope this helps,

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by jbking2 / July 31, 2007 5:17 AM PDT

That AMD runs at 2.2 GHz for its clock speed. Compared to Intel's P4s it is 4.4GHz as that is what that 4400+ refers to I believe.

Semprons would perform worse as they a low-end CPU and the FX line from AMD are their high end, IIRC.


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2.3Ghz for the 4400+
by kpo6969 / August 2, 2007 7:16 AM PDT
In reply to: Answers...
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AMD and Intel
by ozos / August 9, 2007 10:48 PM PDT

have both moved to PR numbers, as Intel states "PR numbers are not indicative of processor performance", they're merely market names.

AMD's market numbers have a bit more sense, they don't directly correlate to a doubling of Intel speed, they're metric is an older Intel CPU, the Pentium 4 Northwood A (about 3 years old as of this writing). The PR number roughly correlates to that CPU's speed in MHZ, which means an Athlon64 3800+, is roughly a 3.8GHZ Pentium 4 Northwood A, still doesn't tell us much. with Athlon64 x2, they list the PR of a single core, and add X2 to the name, so the Athlon64 3800+ and X2 3800+ are both 2GHZ 512k L2 parts, but the X2 has two 2GHZ 512k cores, instead of one.

Now, dual core DOES NOT MEAN, dual the performance, it just means more operations running at once, which does increase performance, however it isn't a full 2.0x (if you want a further/more complex understanding of this, and don't mind the math, look up Amdahl's Law)

Now for a general bit of info on AMD and Intel processor nomenclature:

Sempron is AMD's value line, just like Celeron is Intel's value line
Athlon is AMD's mainstream line, just like Core is Intel's mainstream line (read futher for more on Core vs Pentium)
Athlon FX is AMD's performance line (soon to be replaced), just like Extreme Edition is Intel's performance line (these CPUs are targetted at enthusiasts who are willing to pay upwards of $1000 for a CPU, and are generally not worth the money to the average user)

Pentium is an interesting monkier, originally it was Intel's primary line, with Celeron added alongside Pentium II, Pentium continued through the Pentium D (dual core Pentium 4) line, and then more or less died from the market

recently a Pentium branded CPUs have appeared on the market, as low cost products, they are nowhere close to the actual Pentium 4 architecture, and are instead re-badged and upsold Celerons, their performance is below that of a Core 2, but above that of a Celeron D, generally speaking

The only CPUs missing from this are AMD's Turion (which is a mobile series Athlon) and Intel's Core Duo (very different from Core 2, its a mobile series chip though), anything else, is likely a server/workstation market chip (Opteron, Itanium, PA-RISC, POWER, CBEA, Alpha, MIPS R, X1, SPARC, etc) and wouldn't be practical for home use computing (Xeon is excluded, as its used in the Mac Pro, however its still a workstation CPU, not a consumer CPU, Apple uses it because its multi-CPU capable, allowing 8-core and 16-core systems to be sold)

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