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Rolo01
Experienced

Germany


508 Posts

Posted - 22/10/2003 :  16:59:50  Show Profile  Visit Rolo01's Homepage  Reply with Quote
Be carefull, each VSA-100 can only allocate max. 64 MB
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NitroX infinity
Average

Netherlands
352 Posts

Posted - 22/10/2003 :  20:54:52  Show Profile  Visit NitroX infinity's Homepage  Reply with Quote
@Phozy
I don't think it matters if you put too much memory on the board.
When you put too much memory on your motherboard,
the exces memory just wont be recognized.
As to the SGRAM issue:
quote:
Q2 What's the difference between EDODRAM, SDRAM and SGRAM?
A2 Generally, SDRAM and SGRAM have more high bandwidth than
EDO because of the difference in structure and access time. And
SGRAM has some special command registers and operations to
speed up graphics data accessing, and SDRAM has not such function.
So SGRAM is used by majority 3D graphics cards.
Source: http://www.qdigrp.com/qdisite/eng/support/f_agp1.htm

-
SGRAM is a video-specific extension of SDRAM that includes graphics-specific
read/write features. SGRAM also allows data to be retrieved and
modified in blocks, instead of individually. This reduces the number of reads
and writes that memory must perform and increases the performance of
the graphics controller by making the process more efficient.

-
SGRAM: Synchronous Graphics RAM a single-ported RAM type.
It speeds performance through a dual-bank feature, in which two
memory pages can be opened simultaneously; it therefore approximates
dual-porting. SGRAM is proving to be a significant player in 3-D video
technology because of a block-write feature that speeds up screen fills
and allows fast memory clearing.
Source: http://www.epanorama.net/links/memory.html

-
Synchronous Graphics RAM (SGRAM) is clock-synchronized random access memory
that is used for video memory. It is relatively low-cost video memory. It uses masked write, which enables selected data to be modified in a single operation rather as a sequence of read, update, and write operations. It also uses block write, which allows data for background or foreground image fills to be handled more efficiently. SGRAM is single-ported. Its special features are what make it a moderately fast form of video memory.
Source: http://whatis.techtarget.com/definition/0,,sid9_gci214202,00.html

Edited by - NitroX infinity on 22/10/2003 21:24:01
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amp_man
Experienced

545 Posts

Posted - 22/10/2003 :  21:42:36  Show Profile  Visit amp_man's Homepage  Reply with Quote
aiight, if you have a company with the tools to do that kind of stuff, it wouldn't be a problem. so, would the VSA-100 be able to use RAM that wasn't identical to the original stuff?


when the sun goes down, the music turns up...
|Windows XP Pro|Athlon XP 1800+|GeForce2(Radeon 9500 en route)|MSI K7T266Pro2-A|
|768MB DDR 2700 RAM|SonicEdge 5.1 Sound Card|Sony 500 watt 5.1 surround sound|
"In this place all think voodoo ... if you aren't a voodoo user this is not the right place for you, simple and plain." -AmigaMerlin
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bloodworm
Average

USA


278 Posts

Posted - 22/10/2003 :  22:33:13  Show Profile  Visit bloodworm's Homepage  Reply with Quote
SGram is much too different hardware wise to even be able to slap it onto the V5 5500's in any case. And I don't mean physically (pinout and shape), I mean electrically. The only ram that would be even mildly compatable, Is the same type of ram, but slightly larger in capacity (Ram size) and with the same exact pinout/size. looking over my notes from last time I looked now.......
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PhoZy
Novice

16 Posts

Posted - 23/10/2003 :  03:32:38  Show Profile  Visit PhoZy's Homepage  Reply with Quote
So can anyone list the type of ram,brand and model number that is actually that is going to be able to be use on the v5500?
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Knuckles
Average

Canada
126 Posts

Posted - 23/10/2003 :  17:55:43  Show Profile  Visit Knuckles's Homepage  Click to see Knuckles's MSN Messenger address  Reply with Quote
You can use the same as the already V5 has , this one is the brand & number on my V5 5500 PCI:

TOSHIBA F49022 or TOSHIBA Y10433 ( there's 5 of the 1st one and 3 of the other on mine)
0021KAO
JAPAN
TC5956432CTF-60

They are 8MB each (of course)

Edited by - Knuckles on 23/10/2003 17:56:56
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Hiero
Novice

Germany


42 Posts

Posted - 23/10/2003 :  18:59:20  Show Profile  Visit Hiero's Homepage  Reply with Quote
they should be faster and have more capacity. It's not important by what company it is made.

< We`ll change the face of 3D graphics... again > 3dfx
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amp_man
Experienced

545 Posts

Posted - 23/10/2003 :  21:43:11  Show Profile  Visit amp_man's Homepage  Reply with Quote
isn't there some issue with pin mappings? i think someone mentioned this earlier. will ram that uses different pin mapouts still work?


when the sun goes down, the music turns up...
|Windows XP Pro|Athlon XP 1800+|GeForce2(Radeon 9500 en route)|MSI K7T266Pro2-A|
|768MB DDR 2700 RAM|SonicEdge 5.1 Sound Card|Sony 500 watt 5.1 surround sound|
"In this place all think voodoo ... if you aren't a voodoo user this is not the right place for you, simple and plain." -AmigaMerlin
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sloomy
Average

Germany


111 Posts

Posted - 23/10/2003 :  23:48:08  Show Profile  Visit sloomy's Homepage  Reply with Quote
there are these ram types:

Samsung (relativly often )
Hyundai ( often )
Toshiba ( rare )
MT ( very rare )

cheers
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NitroX infinity
Average

Netherlands
352 Posts

Posted - 24/10/2003 :  08:00:26  Show Profile  Visit NitroX infinity's Homepage  Reply with Quote
Is there any difference between them (except for the manufacturer)?
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sloomy
Average

Germany


111 Posts

Posted - 24/10/2003 :  08:38:38  Show Profile  Visit sloomy's Homepage  Reply with Quote
As far as i know should Hyundai be the best overclockable ones from all of them. I think MT ist the best, because it is very rare, and nobody could test them ;)
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Hiero
Novice

Germany


42 Posts

Posted - 24/10/2003 :  10:32:22  Show Profile  Visit Hiero's Homepage  Reply with Quote
As I already said it doesn't matter what manufacterer it's from, as long as the memory does have the same layout.( different design -> even can't be installed on the card ) Therefor you could take Mitsubishi or Infineon....and so on. Out of ram 3dfx used Toshiba is the best memory to overclock.
Please don't ask if you could DDR2 ram cause you can't !
The memory needs to be normal SD-Ram in the same design as the normal memory already used on the Voodoo5.

< We`ll change the face of 3D graphics... again > 3dfx
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PhoZy
Novice

16 Posts

Posted - 24/10/2003 :  11:09:27  Show Profile  Visit PhoZy's Homepage  Reply with Quote
i went to the tosiba website to find out more abt the memeory,1 things for sure is that forget abt find 16meg version of those chips as they are no longer manufacturing them.And thats is where the problems starts,as if uread the specs of the chips it is 43by44pins layout,and how the hell are we going to find ram chips with this type of layout?
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bloodworm
Average

USA


278 Posts

Posted - 24/10/2003 :  23:17:57  Show Profile  Visit bloodworm's Homepage  Reply with Quote
HYNIX brand ram

4 banks x 1Mbit x 32bit syncronous DRAM

HY57V283220T

we want the 5ns part so we can get the max speed (5ns equates to 200Mhz ie 1/5ns = 200Mhz)

this would get us to 64Mbytes per chip (the maximum the vsa100 will address physically).

I have a pic of one of the mods that hank posted (to add the last address line from the vsa100 to the ram), but the resistor jumper config I can not find.

Hynix has a configurator in PDF format, and it lists many of the configs that could be used (all a variation of this part).

Now we just need to find the parts for sale somewhere......

Bloody Mess
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sloomy
Average

Germany


111 Posts

Posted - 25/10/2003 :  00:49:53  Show Profile  Visit sloomy's Homepage  Reply with Quote
Hey can you post picture(s) of your mod ? For space problem, you can send them to me , i will make them online.. to : sloomy@lycos.com

greetz
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