Intel states:
Intel® Pentium® 4 Processor with HT Technology
Extreme Edition
Power for the passionate gamer and advanced performance for advanced users, the Intel® Pentium® 4 Processor with HT Technology†Extreme Edition delivers an incredible experience for those uses who need processing power for today's most advanced applications, available in speeds at 3.20 and 3.40 GHz.
Intel® Pentium® 4 Processor with HT Technology
The Intel® Pentium® 4 processor with an advanced 800 MHz system bus and supporting Hyper-Threading Technology†is available in speeds from 2.40C to 3.60 GHz, built on the .13µ process technology with 512KB L2 cache, and on the latest 90nm process technology with 1MB L2 cache giving you breakthrough performance on a variety of desktop PCs.
Intel® Celeron® Processor Family
The Intel® Celeron® processor and Intel® Celeron® D processor are designed to bring a balanced level of proven technology and value to basic desktop and notebook PCs. The Intel Celeron processor family is designed to meet your basic computing needs, such as e-mailing friends and relatives, tracking home finances, and running educational software for your kids. The Intel Celeron D processor is built on Intel's latest 90nm technology and is available at speeds up to 2.80GHz.
If you consider a PC in the same way as a family car: one can buy the 'standard' base model, small 6 cylinder engine, 4 speed auto, 5 seats, skinny wheels and tyres. OK performance.
Add in the optional small block V8 [faster CPU], five speed auto [more memory], bigger, fatter wheels and tyres [better, faster video card], sports seats / leather [bigger monitor LCD Panel. Performance gets a kick in the bum, and everything else keeps in tune with the extra power.
So a PC and a Car are not too dissimilar. For improved performance [and balanced performance] one must improve everthying in harmony.
A 2.4Ghz Celeron based system, with smaller hard drive, less capable video, 256Mb RAM is going to be stom,ped on by a Pentium 4 2.4Ghz with a larger Hard Drive, better video and 512Mb RAM.
So balance your budget. Peformance vs Value. 6 new P4s or 8 new Celerons?