GeForce 7800GTX - Recenze atd.

[Bob van Sikorski]

přehled karet:
http://cdr.cz/a/14540

[Masster]

Skoda, ze BFG se da sehnat jen v UK
Tem 1400MHz na pametech u Prolinku se mi moc nechce verit.

[no-X]

Mě taky ne, ale pár webů to uvádí:

PV-N70GXE:
http://geizhals.at/a155076.html
http://www.funcomputer.de/default.as...&do=17&go=3630

uvidíme časem

[Bob van Sikorski]

no ja na to taky cumel jako puk, zejm proto ze ve chvili kdy sem to objevil tak sem to sel overit na prolink a ty to proste a jednoduse neuvedou (stejne jako spousta dalsich vyrobcu karet)

EDIT: este me napadlo, ze kdysi prodaval prolink dve verze gf4mx440 a to normal a "ultra ram", kdy ultraram mela pouze zvedlej takt pameti z 400 na 440 mhz. ne ze by ti neco poresili, pac byly osazeny normalni samsung pameti urceny pro 400 mhz

[no-X]

Prolink měl taky nejrychlejší GF4-Ti4200. Už nevím, jesli měla nadstandardní takty na jádru nebo na pamětech, ale překonávala i některý 4400 a zároveň patřila mezi nejlevnější 4200. Byla hodně oblíbená, ale jako většina GF4Ti měla celkem vysokou reklamovanost

[Mirek]

Mozna taky nebude pravda, ze P.O.V. nebude mit zadny bundle. Oni to jen nenapisi primo ke kartam, protoze to maji formou omezenych akci. Takhle slo k highendovym (ale i k 6600 GT) P.O.V. kartam v urcitych obdobich ziskat docela aktualni hry (Far Cry, pak Brothers in Arms, pak SC: Chaos Theory ...)
http://www.pointofview-online.com/index2.php

[svaca]

Prolink měl taky nejrychlejší GF4-Ti4200. Už nevím, jesli měla nadstandardní takty na jádru nebo na pamětech, ale překonávala i některý 4400 a zároveň patřila mezi nejlevnější 4200. Byla hodně oblíbená, ale jako většina GF4Ti měla celkem vysokou reklamovanost

No nejvetsim problemem Prolinku od dob veku jsou naprosto silene a smejdske vetraky ...

[Camill]

Na CZC uz ji maj v ceniku

Leadtek 17 802,- Kč
MSI 17 076,- Kč

Dodaci lhuta neznama.

Edit:

Uz to tu je, dokonce hned nekde na zacatku. V ceniku ji meli hned v den uvedeni a na Alzasoftu ji meli dokonce skladem

Oops, sorry

[Masster]

Uz to tu je, dokonce hned nekde na zacatku. V ceniku ji meli hned v den uvedeni a na Alzasoftu ji meli dokonce skladem

[ace960]

Ak niekto ma WinFast PX7800 GTX TDH MyVIVO a nie je mu dost tak moze taktovat so zarukou od vyrbocu:
Overclocked BIOS that could enable core clock to 450MHz and memory clock to 625MHz.
http://www.leadtek.com.tw/eng/3d_gra...lineid=1&act=3

[Mirek]

Tak jsem konecne clanek aspon nejak dokoncil:

http://www.zive.cz/h/Testcentrum/Ar....=1&EXPS=&EXPA=


Protoze jedu na dovolenou, tak i kdyz jsem na tom delal tyden porad, z toho poslednich 48 hodin uplne v tahu bez spani (az na 2 hodiny ve fronte na pas ), nestihl jsem skoro nic nez herni testy. Tech tam je zas pro zmenu docela dost, tak snad to nekoho potesi
(srovnani s X850 XT PE, 6800 Ultra i ve SLI a X800 XL, ktery si vede prekvapive dobre ve vysokem rozliseni s anti-aliasingem)

[no-X]

Hilbert Hagedoorn and Unwinder have revealed the G70 core clock is quite variable, jumping to about 40 MHz over the initial clock.

I just verified it, during some new test sessions with core clock monitoring we noticed that the G70 although clocked at 430 standard will in 3D applications immediately jump towards 468 MHz. Even overclocked at 480 Mhz the clock will jump towards 522 MHz, again that ~40 MHz difference.

We currently think that the Pixel and Vertex pipes or triangle setup might be clocked differently to explain that differential. Or even Shader Clock 430 MHz/Rop Clock:430MHz/Geometry Clock:470MHz.

http://www.guru3d.com/newsitem.php?id=2827

[no-X]

Tak se zdá, že na vyšší frekvenci běží pouze část jádra, konkrétně geometrie....

A few days ago on this page

http://www.asus.com/products4.aspx?m...l1=2&l2=6&l3=0

There was
"**Shader Clock 430 MHz/Rop Clock:430MHz/Geometry Clock:470MHz"
at the end of the page

But asus removed it

Strange isn't it ?

Update 1:

Answer from NVIDIA:

Hey Hilbert,

As our chips become more advanced, we are implementing more complex clocking inside the chip. 430MHz is the primary clock speed of the chip and can be verified by fill rate tests.

We will work with Rivatuner to read the correct registers in order to report the right clock.

Hope this makes sense.

Now if you disect that answer (as vague as it honestly is) we can make note of the fact that NVIDIA uses "Primary" clock speed. Obviously, there's a secondary clockspeed running also. Very likely there are surely different clocks for different pipes.

If 430 remains the primary clock then why can Asus (check that here) advertise it as 470 ?

That would be somewhat misleading to you, the consumer as you think it's an uber Ultra version or something like that. They sincerely use this to advertise:

Engine Clock 470 MHz**
**NV clock(430MHz)+Geometric Delta clock(40MHz)

As it seems nobody can explain the 40 MHz differential properly, yet is is being used as marketing gimmick, consumers automatically assume it's 470 MHz where that's not 100% true.

Je zajímavý, že Asus specifikace taktů odstranil, až když to "prasklo". To je poměrně nelogický. Buď o to požádala nVidia, aby to nevnášelo zmatky a nevypadalo, že Asus prodává nějaký rychlejší karty, a nebo je možný, že to Asus neuvedl úplně korektně (polemizuje se o tom, jestli na vyšší frekvenci něběží právě i ROPs)

[THX]

No ale keby bezali na vyssej freq. rops, neovplyvnilo by to vysledok single fillrate? Lebo tam ma karta vysledok ako 16pipelineova prave koli ROPs...

[no-X]

Takže je to pravda částečně - tady je vysvětlení frekvence G70:

ROPs na G70 se také taktují nezávisle, ale pouze ve skocích. Tzn., že G70 má zvlášť taktovanou geometrickou část (vyšší takty +40MHz def.), zvlášť fragment pipelines (430MHz default, oc +-1MHz) a zvlášť ROPs (430MHz default, oc +-27MHz kroky ). Pak samozřejmě ještě paměťový řadič.

podrobnosti:

1) G70 has 3 independently clocked domains with no doubts. I've already fully ripped clock detection logic from the driver, so new RT will replace single "Core clock" graph with 3 graphs, representing current clocks of each domain. I still have no strict info about the functional purpose of these domains, most likely they are geometric domain (that clock is currently read by publicly available RT and 3DMark), shader domain and ROP domain. So this naming scheme ("Core clock \ geometric domain", "Core clock \ shader domain" and "Core clock \ ROP domain") is currently used in beta of RT 15.7. However we're still waiting for NV's official comments on it, as well as performing own synthetic testing allowing us to determine domain functional purposes ourselves. So domain naming scheme will probably change in future.

2) Shader/ROP domain are clocked with more primitive PLL comparing to geometric domain allowing per-1MHz clock frequency adjustment, and currently NVIDIA driver is able to adjust clocks of these domains with 27MHz (oscillator frequency) step only. For example, default 430MHz ROP clock is generated as 27MHz * 16, and the next ROP clock the driver is able to set is 459MHz (27MHz * 17). This results in rather interesting effect when overclocking G70: often overclocking will adjust geometric domain clock only, e.g. attempt to set 440MHz instead of default 430MHz will result in generating the same 432MHz for ROP domian clock, but 480MHz (440+40) for geometric domain clock. This effect is clearly visible on new RT's core clock monitor, G70 owners may also verify it with fillrate tests and see that there are no changes in fillrate for such example.

3) Target 3D clock for shader/ROP domain (430MHz) and delta for geometric domain clock (40MHz) are explicitly specified in VGA BIOS in performance table. New RT is able to display this delta in "NVIDIA VGA BIOS information" section of the diagnostic report. The example of such info is shown below:

$ffffffffff ---------------------------------------------------
$ffffffffff NVIDIA VGA BIOS information
$ffffffffff ---------------------------------------------------
$1100000000 Title : GeForce 7800 GTX VGA BIOS
$1100000002 Version : 5.70.02.11.01
$1100000100 BIT version : 1.00
$1100000200 Core clock : 275MHz
$1100000201 Memory clock : 1200MHz
$1100010000 Perf. level 0 : 275MHz/600MHz/1.20V/100%
$1100010001 Perf. level 1 : 415(+35)MHz/600MHz/1.40V/100%
$1100010002 Perf. level 2 : 430(+40)MHz/600MHz/1.40V/100%
$1100020000 VID bitmask : 00000011b
$1100020100 Voltage level 0 : 1.20V, VID 00000000b
$1100020101 Voltage level 1 : 1.30V, VID 00000010b
$1100020102 Voltage level 2 : 1.40V, VID 00000001b

Please pay attention to performance level 1 descriptor. It is so called low power 3D perormance level, and the system uses this performance level as a temporary step when switching from 3D (performance level 2) to 2D (performance level 0). As you see, it has different "Geometric clock delta", and it perfectly matches with temporary 450MHz clock (415+35), which you can see on many clock graphs.
During overclocking the driver uses this BIOS-defined delta and generates closest possible to desired clock for ROP/shader domain and closest possible to (desired clock + delta) for geometric domain. => We'll probably see some BIOS editors in the future, allowing us to alter this delta. Or even independent clock control sliders for each domain (of course, if NV will decide to provide such functionality in their driver).

Digit-Life are currently preparing the review summing all this info.

[Antiloopa]

Dalsi recenze v cestine

http://www.svethardware.cz/art_doc-F...400767858.html

[Yngwie]

To sem ani nelinkuj...v te recenzi je toli bugu, ze by zaslouzila vymaz...
Namatkou ... Doom 3 FSAA je RX850XT rychlejsi a to podstatne nez 6800Ultra a dotahuje SLI...3Dmarky maji zapnute CPU testy...FarCry a BF2 spatne namerene...

Napsal jsem na SHW, at si to opravi, ale zatim zadna odpoved)

[no-X]

jj, ten Doom je totální úlet a nechápu, že autorovi nedošlo, že evidentně nefungovalo/nezapnul FSAA. Výsledky s a bez jsou totiž totožné

Tenhle článek opravdu není to pravý ořechový

[MadCap]

to sa asi na SHW pos.rali nie? napr BF2 to demo co pouzili je zrejme totalne divne, jak tam mohli urobit 200~fps pri 1600x1200 4xAA 8xAF to nechapem mozno ze aj zle merali (treb frapsom) inak to demo co pouzil mirek a vyrobil som ja neda viac ako 90~ v spicke pri SLI

[Yngwie]

Muzes mi ho poskytnout jestli je fakt povedene?...zaradil bych ho do testu na PCT.

[MadCap]

Muzes mi ho poskytnout jestli je fakt povedene?...zaradil bych ho do testu na PCT.

ja ho kludne publishnem, teda ono malo byt public uz v case uvedenia clanku mirkoveho, ale on odisiel na dovolenku hned potom a ja som nemal kopiu na lokale, je len v redakcii kam idem zajtra, takze ja ho hodim do diskusie na zive a aj sem an forum ked das "credits" tak kludne pouzi

[0king0]

Nový rekord v 3Dmark2005 pro jednu kartu s ASUS EN7800GTX s jádrem na 800Mhz pamětma na 1521Mhz a Athlonem FX57 na 3729Mhz je 11915 bodů. Tomu říkám hukot...
http://forums.vr-zone.com.sg/showthread.php?t=27781

[THX]

akoze tie frekvencie jadier - 800 a 3700 su fakt brutalne, stavim sa ze chladil nejaky tekuty dusik alebo nieco podobne

[elemeNt]

akoze tie frekvencie jadier - 800 a 3700 su fakt brutalne, stavim sa ze chladil nejaky tekuty dusik alebo nieco podobne

Normal 2 stage na grafice a to samy na procaku, jenom nejakejch -90°C

[no-X]

Dema nVidie ke stažení!



http://www.nzone.com/object/nzone_downloads_nvidia.html