Welcome to a Laptop Battery specialist of the Dell Laptop Battery
Intel’s Pentium 4 processor has finally made its way into notebooks, debuting at 1.6GHz and 1.7GHz, and promising ever-faster speeds down the road. The chip certainly has the headroom to grow, and new systems carrying the processor have a faster frontside bus and speedier memory. If your work mostly involves standard productivity apps, though, you may be better off saving money and opting for a 1.2GHz Pentium III-M-based laptop.
Like the Pentium III-M CPUs, the new Pentium 4 woth battery such as Dell UD265 Battery , Dell UD267 Battery , Dell W0465 Battery , Dell W1605 Battery , Dell WG317 Battery , Dell WT870 Battery , Dell WU946 Battery , Dell WW116 Battery , Dell X6753 Battery , Dell XD187 Battery , Dell XD736 Battery , Dell XR693 Battery -M is manufactured under the .13-micron process, which yields relatively power-efficient chips and lets Intel pack in 512KB of performance-enhancing Level 2 cache. The process also allows Intel to decrease the mobile P4’s voltage to 1.3 volts (versus its desktop counterpart’s typical 1.5 volts). This arrangement helps it run cooler; its heat dissipation is the same as the PIII-M chip’s.
The new 845 chip set supports the Pentium 4-M’s 400MHz frontside bus — the same as the desktop P4 — a marked improvement on the PIII-M’s 133MHz bus. With this new chip set, the Intel mobile platform gets new memory as well: 266MHz DDR SDRAM instead of the more familiar PC133 SDRAM. Besides being faster, the new memory should also be slightly more power-efficient than the previous standard.
We looked at one of the first P4-M-based notebooks, a preproduction version of Dell Computer’s new Inspiron 8200, equipped with a 1.7GHz P4-M chip. For comparison, we also tested Dell’s previous model, an Inspiron 8100 unit carrying a 1.2GHz PIII-M processor. Against these two we tested a PC World review system using AMD’s 1.2-GHz mobile Athlon 4 CPU. All three systems ran Windows XP Professional and had 256MB of main system memory.
The two Dell units performed almost identically on our PC WorldBench 4 tests, earning scores within 3 points of each other, though the Pentium III-M-based Inspiron 8100 had the edge with a score of 101 versus the 8200’s 98. While this difference is small, we saw the same pattern repeated on our tests with Photoshop 6.0.1 and AutoCAD. The PIII-M-based 8100 consistently (albeit narrowly) beat its P4-M-based sibling. It’s a bit disappointing that the P4-M-based system, running 500MHz faster, merely kept pace with the PIII-M-based unit, but the same thing happened when Intel introduced its P4 desktop processors.
In fact, the only area where the P4-M-based 8200 finished ahead was on our three multimedia tests: the MusicMatch MP3 encoding test, and the video and audio Windows Media encoding tests — tasks that are strengths of the desktop P4 as well. The 8200 shaved about five seconds off the 8100’s times on the two audio tests, and delivered its best performance on the video test, completing it about 12 seconds faster than its sibling.
The 1.2-GHz Athlon 4-based PC World test unit earned respectable scores on our tests — including an 85 on PC WorldBench 4 — but typically trailed the other two units. In part, that’s due to the notebook’s shared memory architecture, which causes both main memory and its graphics to draw from the same SDRAM pool, hampering performance.
The three systems earned comparably strong scores on our battery life test, ranging from 2 hours 33 minutes (the test unit) to 2 hours, 47 minutes (the Inspiron 8100). Note that all three systems’ processors run at lower clock speeds under battery power. The P4-M drops to 1.2GHz, the PIII-M goes to 800MHz, and though we set the Athlon 4 to match the PIII-M, its lower speed can vary.