Ram 101

[kiepie]

Okay RAM has been talked about all over here, but just a quick question.

If I should list the RAM "speeds" from old to new, it eould be

DDR400
DDRII 667
DDRII 800

Right?

 

[|tera|]

No,

33
66
100
133
266
333
400
5(something, not sure)
667
800

 

[killadoob]

33
66
100
133
266
333
ddr 400
ddr 2 533(something, not sure)
667
800

 

[kiepie]

LOL, okay. But I can't understand this then.

256MB PC400DDR (Twinmos) R 136
512MB PC400DDR (Twinmos) R 235
1GB PC400 DDR (Twinmos) R 435
256MB DDRII-667 (Twinmos) R 120
512MB DDRII-667 (Twinmos) R 150
1GB DDRII-667 (Twinmos) R 269

Why is the 667 so cheap?

 

[Random717]

it's currently the most used format, so it's mass produced leading to lower prices

 

[flarkit]

Not sure what the 33's and 66's were.

PC100
PC133
DDR266
DDR333
DDR400
DDR466
DDR2-533
DDR2-667
DDR2-800
DDR2-1066

 

[killadoob]

yup, also so many ppl want ddr 2 now and ram has dropped in price big time, not many suppliers still bring alot of ddr 400 and bring in tons more ddr 2 which helps with the pricing as well

but cleric hit it on the mark

 

[XCalibre]

Can someone explain Latency's

 

[kiepie]

What I learned was a

high demand= increase in price

 

[kiepie]

Can someone explain Latency's

Come on let me enjoy my questions first. Open a new post or use www.wikipedia.com

 

[XCalibre]

Yes for certain products like food Frana but not for hardware

 

[killadoob]

yes but remember how expensive ram was about 2 months ago

you could not get a 1 gig stick for less than 600-700 bucks

 

[kiepie]

yes but remember how expensive ram was about 2 months ago

you could not get a 1 gig stick for less than 600-700 bucks

Okay so I currently have DDR 400 (one 256mb ), how do I know 677 or 800 wont work on my moterboard?

 

[Random717]

High demand = increase in price, meaning higher profits for ddr2-533 producers. Producers from other sectors see that there is money to be made in this sector, so they all start producing more ddr2-533, until supply overtakes demand and prices drop. The high volume of sales means they can keep producing at the low selling price and still make a profit.
Once demand starts to drop, the less efficient producers can no longer make a profit at the low price and pull out, decreasing the supply, so the prices rise again.

edit: this is not counting sudden advances in technology, and things like earthquakes (which tripled ram prices from 2001-2)

 

[kiepie]

Yes for certain products like food Frana but not for hardware

http://en.wikipedia.org/wiki/RAM_latency

SDRAM latency refers to the delays incurred when a computer tries to access data in SDRAM. SDRAM latency is often measured in memory bus clock cycles. Because a modern CPU is much faster than SDRAM, the CPU has to wait for a relatively long time for a memory access to complete before it can process the data. SDRAM latency contributes to total memory latency, which causes a significant bottleneck for system performance in modern computers.

 

[gifs]

Okay so I currently have DDR 400 (one 256mb ), how do I know 677 or 800 wont work on my moterboard?

DDR and DDRII use different type of slots on your motherboard, it is highy unlikely that your motherboard can take both types. Maybe check your motherboard manual.

 

[killadoob]

even if your mobo can take both, you can only run either ddr 1 or ddr 2

 

[kiepie]

DDR and DDRII use different type of slots on your motherboard, it is highy unlikely that your motherboard can take both types. Maybe check your motherboard manual.

I maybe need to download a manual, because I don't know where it is.

One more Q - Can a keep my 256 in and add a 512 or 1Gig? All 400.

 

[killadoob]

yup

 

[XCalibre]

Yes