anthony wrote on 2024-02-09, 18:44:
LeCarl wrote on 2024-02-09, 04:26:yes , ok I seen the answer for some of my question here klate […]
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yes , ok I seen the answer for some of my question here klate
so, 65 mhz overclock is strange just a little over a 62Mhz, for some original board use it and it's very reliable without heatsink on some cards (usually colder GPU would overclock far more? )
(or it's the driver issue? bios? power strip or edit the INI? somethig wrong, sure... or internally locked/ ''fused'' in consumption)
maybe another crystal?
I remember had an asus TNT1 with an heatsink/fan that killed all other competitor in bench (seen in tomahardware)... by a good 15-20% versus passive as my memory... (?)
I remember seen that Rendition had problems with GPU quality
I mean , it can't explain 2% overclock from 62MHZ andgive the same result with a naked GPU versus good fan/heatsink... 😉
------ I need to push it to 90-100mhz to compare to voodoo 2 and Nvidia riva 128... 😉
rendition did chips binning and 003 chips are close to its silicon limit. this chip is weak and cold. it doesn't benefit from higher bus speed, higher memory clock. more memory adds not much. i tested it only in vquake tho. but at 512x384 in vquake it provides smooth gameplay close to 60fps @62mhz.
no need in heatsink at all.
ok thanks for the info,
so it was the same for me then
I think I remember my s220 V2100 at 60/120 was warm , too hot for finger but not burn hot
I did put an nice 15mm tall 486 pentium 1 over it (an d never had any problems)
I feel this strange behavior, it's not as we know overclock usually,
for me it's almost impossible that the chip can't do more than 65 mhz, it's why I want a fast memory board to dirt, I will put anchor for peletier and big heatsink/fan or watercooling.
(I have some very nice premium dual stage peletier TEC from astronomy camera, I did build years ago and still have some, if the chip consume less than 5W, I will push it to -30 degres Celsius easy...)
Maybe it have something with latency or internal/external wait state for memory, something hang on the chip? voltage?
I did check the lithography, it's .350nm... but I guess it's bad early process, Riva 128 is .350 too and clocked at 100 mhz (I guess better late process, the gpu is one year later...)
Rendition sales spec sheet
''The Rendition Verite V2200 is fabricated in a 0.35 micron 3-metal CMOS process.''
Riva 128 wiki
''The graphics accelerator consists of 3.5 million transistors built on SGS-Thomson's 5LM 350 nm fabrication process and is clocked at 100 MHz''
I read that rendition had a lot of quality problems... but... let's see 😉
I think it worth the experiment 😉