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DDR2 was officially introduced in the second quarter of 2003 at two initial clock rates: 200 MHz (referred to as PC2-3200) and 266 MHz (PC2-4200). Both performed worse than the original DDR specification due to higher latency, which made total access times longer.
Moduły pamięci DDR2 nie są kompatybilne z modułami DDR. Pamięci DDR2 są obsługiwane zarówno przez architekturę x86, PowerPC (np. mac pro G5) jak i ARM. Występują moduły, które działają tylko pod AMD. Pamięci SDRAM DDR2 występują w modułach o pojemności od 256MB do 4GB.
24 sie 2016 · Those modules are identified by an additional R in their designation, whereas non-registered (a.k.a. "unbuffered") RAM may be identified by an additional U in the designation. PC2-4200R is a registered PC2-4200 module, PC2-4200R ECC is the same module but with additional ECC.
This is DDR2 SDRAM at 533 MT/s in a 200-pin SO-DIMM form-factor. DDR2-533 may also be interchangeably referred to as PC2-4200. Available DRAM modules from Lenovo
SIW diagnostic software gives me the follwing info about the current RAM: Capacity: 512MB; Type: DDR2 (PC2-4300); Speed: 266Mhz (DDR2 533); Supported Frequencies: 200.0 MHz, 266.7 MHz, 266.7 MHz. The CPU is an Intel Pentium M 740, and the FSB speed is 532.0 MHz.
DDR2 Unbuffered SODIMM Spec Sheet 1 Rev 1.0 Nov. 2010 Features •200-pin, Small-Outline Dual In-line Memory Module (SODIMM) • Fast data transfer rates: PC2-4200, PC2-5300, or PC2-6400 • 512MB (64Mx64), 1GB (128 Meg x 64), 2GB (256 Meg x 64) • JEDEC standard 1.8V I/O (SSTL_18-compatible) • VDD = 1.8 V ±0.1V (SSTL_18)
(2048MB) PC2-4200 CL3 SDRAM (Synchronous DRAM) memory module. The module is based on sixteen 128M x 8-bit DDR2 FBGA components. The SPDs are programmed to JEDEC low latency timing of 3-3-3-8 at 1.8V. This 200-pin SODIMM uses gold contact fingers and requires +1.8V. The electrical and mechanical specifications are as follows: SPECIFICATIONS
