VOGONS


The story of the QuForce FX 5800 Ultra...

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Reply 120 of 126, by Mamba

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mockingbird wrote on 2021-01-12, 19:11:

I strongly recommend you underclock the memory of the FX3000 to at least 200Mhz below spec. The DDR in the FX3000 is notorious for not lasting long at stock clocks. This does not apply to Quadro 1000 and 2000 which used vastly improved DDR2.

I would advise doing this via a BIOS mod rather than through software because the card will run at stock clock until the software applies the changes, well after the boot process completes.

Have you a modded bios for me?

Reply 122 of 126, by Mamba

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mockingbird wrote on 2021-01-12, 19:54:

If you dump yours I can do it for you, but it should be pretty simple to do it yourself.

Do not underestimate my stupidity.
Will try to send you the file tomorrow, thank you so much!

Reply 124 of 126, by mockingbird

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mockingbird wrote on 2021-01-12, 19:11:

I strongly recommend you underclock the memory of the FX3000 to at least 200Mhz below spec. The DDR in the FX3000 is notorious for not lasting long at stock clocks. This does not apply to Quadro 1000 and 2000 which used vastly improved DDR2.

I would advise doing this via a BIOS mod rather than through software because the card will run at stock clock until the software applies the changes, well after the boot process completes.

I should clarify that the Quadro 1000 and 2000 may not be that much better of an improvement with regard to memory quality:

https://en.wikipedia.org/wiki/DDR2_SDRAM#Rela … _to_GDDR_memory

"GDDR2, a form of GDDR SDRAM, was developed by Samsung and introduced in July 2002. The first commercial product to claim using the "DDR2" technology was the Nvidia GeForce FX 5800 graphics card. However, it is important to note that this GDDR2 memory used on graphics cards is not DDR2 per se, but rather an early midpoint between DDR and DDR2 technologies. Using "DDR2" to refer to GDDR2 is a colloquial misnomer. In particular, the performance-enhancing doubling of the I/O clock rate is missing. It had severe overheating issues due to the nominal DDR voltages. ATI has since designed the GDDR technology further into GDDR3, which is based on DDR2 SDRAM, though with several additions suited for graphics cards.

GDDR3 and GDDR5 is now commonly used in modern graphics cards and some tablet PCs. However, further confusion has been added to the mix with the appearance of budget and mid-range graphics cards which claim to use "GDDR2". These cards actually use standard DDR2 chips designed for use as main system memory although operating with higher latencies to achieve higher clockrates. These chips cannot achieve the clock rates of GDDR3 but are inexpensive and fast enough to be used as memory on mid-range cards.

So are the FX2000 and FX1000 that much better than the FX3000 with regard to memory quality? It comes down to whether Samsung "GDDR2" is better than Hynix GDDR. Neither are based on DDR2.

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Reply 125 of 126, by gmipf

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I have finally got a Quadro FX1000 and want to overclock it to 500/500Mhz but need a good cooling solution before attempting the OC and bios mod to FX5800U. Can someone recommend a good GPU cooler which fits on this card? I have considered the Prolimatech MK-26 but I'm not sure if the screw holes will fit? And any recommendation for memory cooling? The FX1000 essentially doesn't have any memory cooling.

Reply 126 of 126, by gmipf

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slivercr wrote on 2018-03-21, 16:10:
Its true that they are rare. Around the web you find a figure of 100000 total NV30 chips, half of which were for Quadros, the re […]
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chose007 wrote:
OK thanks for link. This was 10 years back cooling mod for daily using with 120mm fans - because noise from original cooler of c […]
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OK thanks for link.
This was 10 years back cooling mod for daily using with 120mm fans - because noise from original cooler of course.
Today I have several FX5800 cards but not planing any voltage mods, only tests or repairs. So hard find any piece today, voltage mod should make on FX5600/5700/5900 cards.

Measuring require running card, give me time. Actualy haven't place for other setup on my table 😁

Its true that they are rare. Around the web you find a figure of 100000 total NV30 chips, half of which were for Quadros, the rest divided between OEMs. I don't know if it's true, but that is a SMALL number.

Rare and all, I did a voltage mod on this one: stock DDR voltage for this card was 2.3V, as far as I can tell from looking online and looking at a datasheet for "similar" Samsung chips, they should run at 2.5V. I brought them up to 2.48V, which gave me some stability when clocking them beyond 400 MHz. Easy soldering to some test points that were nearby, easily reversible too.
vddr_mod.jpg

I would like to do this mod on my Quadro FX1000. Which value does the resistor has? I'm not good at reading those stripes. And do I have to remove something else beforehand? Do you just bridge from a 3.3V line and decrease it with the resistor to 2.48V? I also want to delid the NV30 and use Thermal Grizzly Hydronaut as the thermal paste. I already found and ordered a (somewhat rare?) Zalman VF1000-LED fully in box. I also need to figure out which thermal conductive double sided tapes I want to get for the RAM cooling, those included by Zalman shouldn't be that great I think.

EDIT: On the FX1000 are also 2 electrolytic caps missing, which are present on the F58000(U) and FX2000. Are they the same as the other pink cans? I also want to install those missing caps. I think they are for stabilizing the GPU voltage?