Category: RAM

ELPIDA EBJ21UE8BDF0-AE-F

EBJ21UE8BDF0-AE-F

The ELPIDA EBJ21UE8BDF0-AE-F DDR3-1066 has support for DDR3-1066F and DDR3-1066G timings. With our Asus M5A99FX PRO R2.0 we are able to operate the Elpida at DDR3-1333 speeds which shows that the quality of this memory was well above the standard. Overclocking this memory was stable to DDR3-1400 speeds. The RAM is configured as 1 gigabit …

Continue reading

ELPIDA 16JTF25664AZ-1G4F1

We have a single stick of Elpida DDR3-1333 which we have been using for testing motherboards. Sticker on the DIMM bears MT16JTF25664AZ-1G4F1 which is a Micron part number. This RAM is old enough to be very early in the DDR3 period. See the RAM Timing page for more information on how RAM timings work. AMD …

Continue reading

COUNTERFEIT COMPUTER HARDWARE

We have noticed that counterfeit computer components are becoming a growing problem. We first encountered this problem with the AK 680 power supply. The Echostar 680W is even worse. Both use oem power supply boards and labeled their respective products at double the actual true capacity or more. Vast  numbers of these counterfeit power supplies …

Continue reading

DDR3 CPU-Z TIMING GALLERY

This page has series of CPUID timings images for known good memory.

DDR3 MEMORY

The system memory on a typical gaming machine currently ranges from about 2GB to 64GB depending on the age of the machine and the budget. In 2015, its advisable to have at least 8GB installed with the larger number of 64 bit-games available. Memory prices have generally fallen with a price deflator of about 45% …

Continue reading

HARDWARE RESERVED MEMORY

Sometimes adding additional memory to a machine may not work properly. Some memory is reserved for peripherals however generally this should be a small amount. See our page on DDR3. See our page on counterfeit DDR3. As an example, our Asus M5A99FX PRO R2.0 machine originally was built with a pair of 4096MB DDR3-2133 sticks …

Continue reading

SERIAL PRESENCE DETECT

SPD was fist seen with Samsung KM48SL2000 SDRAM. SPD is a small 256 byte flash memory that is found on DIMM. Its used by the SMBUS to provide the timings for the BIOS. JEDEC only uses 128 bytes, the rest is used by manufacturers to show brand, part numbers and serial numbers. There is no …

Continue reading

RAM CARDS

384KB AST Six Pak

In the early days of the PC, memory was installed on cards to be placed into expansion  slots. This is due to the relatively limited capacity of the system board. The S100 platform offered many more slots than the IBM PC or PC-AT could offer. improved density made it more practical to have fewer slots. …

Continue reading