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NV20 using QDR Sdram??
- Thread starter LordAlien
- Start date
I'm not exactly postive. I believe SRAM is what they use in caches, I'll see if I can find the thread that talked about this a little......
here it is just read the last 3 pages to get the info
here it is just read the last 3 pages to get the info
EvilDonnyboy
Banned
its rumored memory is 200mhz 256bit DDR Sdram.
The previous geforeces had a 128 data bus, so the rumored 256 data bus would effectivley double the DDR's bandwith. so basically it'd be as fast as 128bit QDR SDRAM.
The previous geforeces had a 128 data bus, so the rumored 256 data bus would effectivley double the DDR's bandwith. so basically it'd be as fast as 128bit QDR SDRAM.
SRAM (static RAM) uses high-speed latches (logic gates in a sequential circuit) to store information. As long as power is supplied to the circuit, it will retain the information. The advantage is that they are very fast and the logic design is very simple, but they are expensive to produce. It is mainly used in high-speed cache situations.
DRAM (dynamic RAM, ie EDO DRAM, SDRAM, DDR SDRAM, RDRAM) uses miniature capacitors to store information. The advantage is that they are very inexpensive to produce, but they are difficult to design. Also, because the capacitors loose their charge, they must be refreshed every few milliseconds, which is why DRAM inherently has a much higher latency that SRAM. DRAM is used for main memory.
DRAM (dynamic RAM, ie EDO DRAM, SDRAM, DDR SDRAM, RDRAM) uses miniature capacitors to store information. The advantage is that they are very inexpensive to produce, but they are difficult to design. Also, because the capacitors loose their charge, they must be refreshed every few milliseconds, which is why DRAM inherently has a much higher latency that SRAM. DRAM is used for main memory.
JEDEC white paper says next thing after DDR (PC2100) is DDR2 (PC4800).
QDR SRAM is entirely different thing.
However small amount of SRAM is to be used in enhanced DDR2.
Hope that clears confusion a bit. 😎
QDR SRAM is entirely different thing.
However small amount of SRAM is to be used in enhanced DDR2.
Hope that clears confusion a bit. 😎
EvilDonnyboy
Banned
check out Firingsquads's memory articles. They may be of some use to u.
here is the "guides" page, look for the memory stuff
here is the "guides" page, look for the memory stuff
PCResources
Banned
SRAM consists of 4 transistors and 1 resistor per cell, therefore it is more expensive to produce than DRAM (as in SDRAM) wich only uses 1 transistor per cell.
If it were not so much more expensive to produce, SRAM could very well be used instead of DRAM.
Patrick Palm
Am speaking for PC Resources
If it were not so much more expensive to produce, SRAM could very well be used instead of DRAM.
Patrick Palm
Am speaking for PC Resources
PCResources
Banned
I'm sorry, i do not have the time to go into these things, you will have to do some homework on the SRAM - SDRAM technology, do what everyone else does, search the web. If you have any questions about the validity of each technology, or any term probs, then please put that in another thread, you will surely get help.
This place is filled with people who know everything about anything.
Patrick Palm
Am speaking for PC Resources
This place is filled with people who know everything about anything.
Patrick Palm
Am speaking for PC Resources