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The highest-rated DDR2 modules in 2009 operate at 533 MHz (1066 MT/s), compared to the highest-rated DDR modules operating at 200 MHz (400 MT/s). At the same time, the CAS latency of 11.2 ns = 6 / (bus clock rate) for the best PC2-8500 modules is comparable to that of 10 ns = 4 / (bus clock rate) for the best PC-3200 modules.
The laptop also featured a physical switch that could disable or enable the discrete graphics card at will and make the computer use the integrated processor GPU to increase battery life. It had 4 GB of DDR3-1333 memory soldered to the motherboard, and one open RAM slot which was customer-accessible and supported an additional 4 GB of RAM.
JEDEC has set standards for the data rates of DDR SDRAM, divided into two parts. The first specification is for memory chips, and the second is for memory modules. The first retail PC motherboard using DDR SDRAM was released in August 2000. [10]
The laptop uses DDR4 RAM which can be upgraded to 32 GB and has one M.2 slot for an SSD and one M.2 slot for a wireless card. The screen was improved by switching from a TN to IPS LCD. 7577 [ 77 ] — The 2018's model changes the styling of the fan and speaker grills from the Inspiron 15 7000 Gaming (7567).
The laptop featured up to a 2.53 GHz Intel Core 2 Extreme QX9300 CPU, up to 8 GB of DDR3 RAM (two slots), either an (MXM-mounted) Nvidia Quadro FX 2700M or FX 3700M with up to 1 GB video RAM, and a 17-inch (43 cm) 16:10 TN LCD display with a resolution of 1440 × 900 or 1920 × 1200.
Memory modules of SK Hynix. In computing, a memory module or RAM stick is a printed circuit board on which memory integrated circuits are mounted. [1] Memory modules permit easy installation and replacement in electronic systems, especially computers such as personal computers, workstations, and servers. The first memory modules were ...
Moreover, if a mainboard has a dual-or quad-channel memory subsystem, all of the memory channels must be upgraded simultaneously. 16-bit modules provide one channel of memory, while 32-bit modules provide two channels. Therefore, a dual-channel mainboard accepting 16-bit modules must have RIMMs added or removed in pairs.
Volatile memory is computer memory that requires power to maintain the stored information. Most modern semiconductor volatile memory is either static RAM (SRAM) or dynamic RAM (DRAM). [a] DRAM dominates for desktop system memory. SRAM is used for CPU cache. SRAM is also found in small embedded systems requiring little memory.