Go Back   nV News Forums > Hardware Forums > Benchmarking And Overclocking

Newegg Daily Deals

Reply
 
Thread Tools
Old 01-06-04, 03:46 PM   #13
ChrisRay
Registered User
 
ChrisRay's Avatar
 
Join Date: Mar 2003
Location: Tulsa
Posts: 5,101
Default

Uhh Theres a pp hint in a full DX 9.0 Mixed mode and a 1.4/2.0 Shader mode for FX cards? Is that what your sayen Stealth?
__________________
|CPU: Intel I7 Lynnfield @ 3.0 Ghz|Mobo:Asus P7P55 WS Supercomputer |Memory:8 Gigs DDR3 1333|Video:Geforce GTX 295 Quad SLI|Monitor:Samsung Syncmaster 1680x1080 3D Vision\/Olevia 27 Inch Widescreen HDTV 1920x1080

|CPU: AMD Phenom 9600 Black Edition @ 2.5 Ghz|Mobo:Asus M3n HT Deluxe Nforce 780A|Memory: 4 gigs DDR2 800| Video: Geforce GTX 280x2 SLI

Nzone
SLI Forum Administrator

NVIDIA User Group Members receive free software and/or hardware from NVIDIA from time to time to facilitate the evaluation of NVIDIA products. However, the opinions expressed are solely those of the members
ChrisRay is offline   Reply With Quote
Old 01-07-04, 12:32 AM   #14
StealthHawk
Guest
 
Posts: n/a
Default

Quote:
Originally posted by ChrisRay
Uhh Theres a pp hint in a full DX 9.0 Mixed mode and a 1.4/2.0 Shader mode for FX cards? Is that what your sayen Stealth?
Yeah. AFAIK there is a mixed mode for the high end cards that uses full precision and partial precision. And there is another mixed mode for midrange cards like gfFX5600 that uses PS1.4/PS2.0.
  Reply With Quote
Old 01-07-04, 07:58 AM   #15
The Baron
Guest
 
Posts: n/a
Default

Quote:
Originally posted by StealthHawk
There are two mixed modes in HL2. One is DX9 and one is DX9/DX8.
I would hesitate to call the DX9 codepath a mixed mode. Sure, it uses _pp and can mix FP16 and full precision, but it doesn't necessarily mean that the card uses mixed precision (cards that don't support _pp).

I hesitate to called a codepath that might use mixed precision a true mixed mode simply because it isn't necessarily a mix of anything. Also, a mixed precision mode does not offer the enormous performance benefit of the DX8/9 real honest-to-God mixed mode. Weren't the original benchmarks showing the NV cards running the mixed mode about twice as fast as the DX9 codepath?

Yes, Shirley, I'm going to call the mixed precision mode the DX9 codepath from now on, and I will call the DX8/9 the mixed mode.
  Reply With Quote
Old 01-07-04, 09:31 PM   #16
StealthHawk
Guest
 
Posts: n/a
Default

Quote:
Originally posted by The Baron
I would hesitate to call the DX9 codepath a mixed mode. Sure, it uses _pp and can mix FP16 and full precision, but it doesn't necessarily mean that the card uses mixed precision (cards that don't support _pp).

I hesitate to called a codepath that might use mixed precision a true mixed mode simply because it isn't necessarily a mix of anything. Also, a mixed precision mode does not offer the enormous performance benefit of the DX8/9 real honest-to-God mixed mode. Weren't the original benchmarks showing the NV cards running the mixed mode about twice as fast as the DX9 codepath?

Yes, Shirley, I'm going to call the mixed precision mode the DX9 codepath from now on, and I will call the DX8/9 the mixed mode.
No. There were benchmarks of NV35 on the true DX9 codepath(full precision) versus the mixed precision codepath. The mixed precision codepath was a lot faster than the full precision codepath.

There were benchmarks of the NV31 using the DX9 mixed precision codepath versus using the DX8/9 codepath. NV35 however, was never ever benchmarked on the DX8/9 codepath.

We don't know how Valve will handle different codepaths, but I imagine cards that don't have multiple precisions like Volari and Radeon will not even have the option to run the mixed mode since there is no benefit.

Valve in their slides and review sites are calling the mixed precision mode the "mixed mode codepath" and are calling the full precision mode the "DX9 codepath."
  Reply With Quote
Old 01-07-04, 09:43 PM   #17
The Baron
Guest
 
Posts: n/a
Default

AHHH CRAZY TERM MIXUP EXPLOSION.

Okay. I stand corrected. I never really paid that much attention to the HL2 benches anyway.
  Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


Similar Threads
Thread Thread Starter Forum Replies Last Post
Legit Half Life 3 concept arts leaked AthlonXP1800 Gaming Central 5 06-29-12 03:27 AM

All times are GMT -5. The time now is 11:05 PM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 1998 - 2014, nV News.