ddr2 speeds

AMD platform Memory frequency factor calculation method is as follows: The frequency factor n=cpu the default main frequency x2÷ the memory nominal frequency, obtains the numerical value again uses "enters one method" to take the whole number, notes, "enters one method" is not rounded, but puts the digit after the decimal place, in the front integral part adds one At this time the actual operation of memory frequency F=CPU main clock division frequency coefficient N. (CPU frequency increase, wil

Compared with the DDR2, the GDDR3 architecture is closer to the DDR2 and is developed by DDR2 as the video card's dedicated memory. In terms of speed, GDDR3 is closer to DDR2 and has a certain gap with the newer DDR3. and GDDR3 and DDR3 are completely different two-generation products. Compared with GDDR, the main inno

4 error data bits, the server's reliability and stability are more fully protected. (3) Register Register is register or directory register, the role in memory we can take it to understand the catalog of the book, with it, when the memory received read and write instructions, the directory will be retrieved before the read and write operation, which will greatly improve the server memory efficiency. Memory with register must have buffer (buffer), and the current register memory can also have

Document directory Storage Device Interface technical details Read operations Write operation IP address optimized based on the Cyclone II Device In the new and existing FPGA market, what is Cyclone? The II device extends the role of FPGA in low-cost and large-volume applications. FPGA is now no longer limited to peripheral applications and can execute many key processing tasks in the system. As FPGA is increasingly applied to the data path of the system, FPGA must have interfaces with

, # aipsreg_opacr4_offset] ; Set all mprx to be non-bufferable, trusted for R/W, ; Not forced to user-mode. LDR r0, = (0x77777777) STR r0, [R1, # aipsreg_mpr0_offset] STR r0, [R1, # aipsreg_mpr1_offset] STR r0, [R2, # aipsreg_mpr0_offset] STR r0, [R2, # aipsreg_mpr1_offset] Memory initialization 1.7 Configure the relevant pins of DDR2 as DDR2 input, for example: Figure 3 By setting iomuxc_sw_pad_ctl_grp

Http://www.cnblogs.com/spartan/archive/2011/05/06/2038747.htmlSdramSDRAM (Synchronous dynamic random access memory), synchronous, refers to the memory work requires a step clock , The transmission of internal commands and the transfer of data are based on it, dynamic refers to the storage array needs to be constantly refreshed to ensure that the data is not lost, random refers to the data is not linear storage , but by the specified address to read and write data. The current 168-wire 64bit band

Often encounter someone want to replace memory do not know what kind of memory to buy, also often meet people ask upgrade memory to buy what kind of memory is compatible, here to share a bit, incidentally popular science. The hand party can jump straight over to see the summary:1, different generations of memory is incompatible with each other. Memory can be divided into DDR1, DDR2, DDR3, here 1, 2, 3 refers to the first generation of memory, these me

Introduction DDR,DDR2,DDR3 memory is categorized according to the maximum speed at which they can work and their timing. Timing are represented by a series of numbers such as 3-4-4-8,5-5-5-15,7-7-7-21 or 9-9-9-24, the lower the better. In this article, the meanings of these numbers are explained. The memory of DDR,DDR2 and DDR3 complies with the DDRXXX/PCXXX classification specification. The first set of

-bit 4*2 8x 4400 8x versionGeforce4 ti4600 8.0 DDR 128 MB 300/650 128-bit 4*2 4XGeforce4 ti4800 8.0 DDR 128 MB 300/650 128-bit 4*2 8x 4600 8x versionGeforce fx5200 9 DDR 64 MB 250/400 128-bit 2*2 8xGeforce fx5200 U 9 DDR 128 MB 325/650 128-bit 2*2 8xGeforce fx5500 9 DDR 128 MB 270/400 128-bit 2*2 8xGeforce fx5600 XT 9 DDR 128 MB 235/400 128-bit 2*2 8xGeforce fx5600 9 DDR 128 MB 325/550 128-bit 2*2 8xGeforce fx5600 U 9 DDR 128 MB 350/700 128-bit 2*2 8xGeforce fx5600 U 9 DDR 128 MB 400/800 128-bit

necessary! ② often see for example DDR2 800 and DDR3 1333 what these represent DDR2 refers to 2 generation of memory, memory is divided into DDR (1 generation), DDR2 (2 generation), DDR3 (3 generation), of course, performance comparison, 3 generation of performance >2 generation of >1 generation. As for similar to DDR2