Ddr 400 problem (Razni hardverski problemi) @ Bug.hr Forum

Lili

16 godina

neaktivan

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pon 15.9.2008 23:40

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Ddr 400 problem

do sad sam imao 2*512mb i to je radilo u DC, sad sam kupio 1gb u komadu i dok se dizu win pise

da radi u single ch!!!

znaci li to da moram kupiti jos gigu rama pa da imam 2*512mb +2*1gb da bi radilo u DC, ili je u

necem drugom problem?

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r420r

17 godina

neaktivan

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pon 15.9.2008 23:51

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RE: Ddr 400 problem

u SC-u moze radit samo ako su svi moduli isti.

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Lili

16 godina

neaktivan

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uto 16.9.2008 0:41

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Ddr 400 problem

necu da radi u sc, nego u dc!

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r420r

17 godina

neaktivan

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uto 16.9.2008 0:45

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RE: Ddr 400 problem

dobro, dobro... nista ne propustas. u praksi razlika izmedu sc i dc je mala ili nikakva. ako bas hoces dc, svi moduli moraju biti isti. dakle, svi moraju biti iste velicine i brzine.

[EDIT]

sorry, tek sad sam vidio da sam gore krivo napiso... kasno je...

Poruka je uređivana zadnji put uto 16.9.2008 0:47 (r420r).

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klimama

17 godina

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uto 16.9.2008 13:39

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RE: Ddr 400 problem

r420r kaže...

... u praksi razlika izmedu sc i dc je mala ili nikakva. ako bas hoces dc, svi moduli moraju biti isti. dakle, svi moraju biti iste velicine i brzine.

Za simetrični Dual Channel (Symmetric) svi moduli moraju biti jedankog kapaciteta.

Međutim, neke matične ploče (uglavnom novije) podržavaju i nesimetrični Dual-Channel (Asymmetric), kada u kanalaima imamo različitu količinu RAM-a.

Asimetrični DC je sporiji od simetričnog DC, ali brži od SC.

Ja imam 2 X 2GB DDR2 PC-6400 + 2 X 1GB DDR2 PC-6400 (ukupno 6GB) i rade kao Duall Channel.

Memory Organization and Operating Modes

The (G)MCH memory interface is designed with Intel® Flex Memory Technology so that it can be configured to support single-channel or dual-channel DDR2 memory configurations.
Depending upon how the DIMMs are populated in each memory channel, a number of different configurations can exist for DDR2:

• Single Channel – only one channel of memory is routed and populated, or if twochannels of memory are routed, but only one channel is populated; can be either
channel A or channel B.

• Dual Channel Asymmetric – both channels are populated, but each channel has a different amount (MB) of total memory.

• Dual Channel Symmetric – both channels are populated where each channel has the same amount (MB) of total memory.

The following sections explain and show the different memory configurations that are supported by the Intel 965 Express chipset family.

Single-Channel
The system will enter single-channel mode when only one channel of memory is routed on the motherboard, or if two-channels of memory are routed, but only one channel is populated. In this configuration, all memory cycles are directed to a single channel.

Dual-Channel Asymmetric
This mode is entered when both memory channels are routed and populated with different amounts (MB) of total memory. With the aid of Intel Flex Memory Technology this configuration allows addresses to be bounced between channels in interleaved mode until the top of the smaller channel’s memory is reached, allowing for full dual channel performance in that range. Access to higher addresses will all be to the channel with the larger amount of memory populated; thus giving single channel performance through those addresses.

Dual-Channel Symmetric
This mode allows the end user to achieve maximum performance on real applications by using the full 64-bit dual-channel memory interface in parallel across the channels.
The end user is only required to populate both channels with the same amount (MB) of total memory to achieve this mode. The DRAM component technology, device width, device ranks, and page size may vary from one channel to another. Addresses are bounced between the channels, and the switch happens after each cache line (64-byte boundary). If two consecutive cache lines are requested, both may be retrieved simultaneously, since they are ensured to be on opposite channels.

Mixed DRAM Memory Speeds
The (G)MCH will accept mixed DDR2 speed populations, assuming the SPDs on the DIMMs are programmed with the correct information and the BIOS is programmed as outlined in Intel’s BIOS reference code.
In all operating modes (Single-Channel, Dual Channel Asymmetric, and Dual-Channel Symmetric) the frequency of the System Memory will be set to the lowest frequency with its supported speed bin timings of all DIMMs populated in the system, as determined through the SPD registers on the DIMMs. For example, a DDR2-667 DIMM with supported 5-5-5 speed bin timings installed with a DDR2-533 DIMM with supported 4-4-4 speed bin timings should run at 533 MHz with supported 4-4-4 speed bin timings. The DDR2-667 DIMM should downshift to DDR2-533 timings, thus allowing the system to run at 533 MHz with supported 4-4-4 speed bin timings. The DDR2-667 DIMM will only downshift to DDR2-533, if the timings for DDR2-533 are programmed in the DDR2-667 DIMMs SPD.

Ne vozi brže nego što tvoj anđeo čuvar može letjeti!

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r420r

17 godina

neaktivan

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uto 16.9.2008 14:59

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Ddr 400 problem

@ klimama

ali covjek nema ADC, zato sto koristi DDR-400... ali ovo sta si reko stoji.

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