ATI RV740 review/preview

I would say UMC/Chartered would get the best end of that.

 

The 4770 is starting to show up on newegg again. Two brands in stock at this moment. Funny thing is, with the recent price drop of the 4850, the 4770 (at the same price as it was at launch) is now more expensive.

 

Some local distributors have it in stock, it's more expensive than HD4850, too, but despite it, the cards are always sold out in a few hours/days.

I think ATi made a mistake - they shouldn't reduce prices of their products so massively - majority of people don't care about price as much (e.g. they have certain amout of money and they buy that model, which is available for the price). There is also large group, which buys nV models (GF9/GTS250) despite they are significantly slower and more expensive (at least at local market).

 

If the 4850 = 4770, we could count it on market replacement, but now it seems like they're really, really wanting to avoid the nVentory issue err... nV had.

Oh well, since the October RV8 launch is rumored to cover the whole product range at once, the 770s really need to GTFO in these 3 months.


And for GF Bulk, I think the first natural fit would be ATI chipsets and lowend GPUs. 2 sectors where silicon performance is no pressing concern.

Heh, same here. They're happy with physx on their 9500 I heard.

 

Pretty sure they are planning on using the 4770 in their lineup...

 

If the 4770 was delayed as much as it appears it was. It may see a short lifespan similar to the R520 and R600. Assuming, of course, that similar to R520 and R600 its successor is on track to be on time.

Regards,
SB

 

RV740 fits back-to-school performance mobile parts this year while DX11 full range still launches in Oct?

 

AMD's keeping their cards pretty close to their chest. Considering we expect DX11 in retail by mid October we haven't heard much news if any coming out of Taiwan.

 

Well we are still ~3.5 months away from launch, I would expect we start hearing more info in a month or so.
You are right though, definitely much quieter than the last couple of releases, after RV770.

 

HD4770X2

 

I think it's pretty reasonable to expect RV740 to stay in the line up till at least DX11 refresh.

 

Hopefuly am in the right thread....

This post is nicely showing up my poor translation skills, from chiphell:
http://bbs.chiphell.com/viewthread.p...extra=page%3D1

At first i thought above was about Junipers and Cypresses, but the "7 generation" suggests may be the RV740 chip. Item 3) may still be about Evergreen parts.

ie 300k 4770 and 100k 4770x2 boards being produced. "Hong Kong factory" would almost certainly be PC Partner. They are apparently having trouble producing the boards, also something about single fans similar to nvidia design, not sure if US$20 figure is for the core price(ie RV740) or the fan price.

Greater than "40 layer" PCB sounds ridiculous so maybe something is wrong with my translation. Also the proportion of single to dual cards would be way too low should be something like at least 6:1 or 10:1 rather than 3:1.

Further down in the thread it is mentioned Cypress has a Pro version TDP at 110W and XT TDP at 130W...this sounds fairly low for performance part suspect clocks are to be set fairly conservatively.

 

Oops wrong thread...

The above i think now is wrong, cant find any support for a 4770x2 board....There is some talk of a 4750 part based on RV740 slightly downclocked and without a power adapter but no dual card i can find.

Above must related to Juniper and Cypress. The "7 generation" stuff i guess is something to do with the final retail name of the parts.

So approx 300k Juniper boards and 100k Cypress boards in production.

 

Sorry Robert, was really busy and computerless for a while (and forgot about B3D while at public library terminals )


The passage above refers to RV870 actually.

It's not the seventh generation, instead it's the "7"th in its family (relative positioning) as 670 is the "7"th.

But obviously orders now are mainly for Evergreen and 740, and 770 is not a dual core, so 870 is a given.

 

So the RV870 is a dual-chip/dual-core board. The Hong Kong factory is having problems making boards with "very tight control" over impedance variation. Normally this factory has no problem making boards with 40 layers.

The obvious question mark now is that impedances need to be tightly controlled on high-speed interconnects. Variations in impedance basically mean more noise and signals that will "arrive" at more greatly varying times - both things that will hinder absolute speed. Since high-speed is routine for GDDR5, the implication is that a separate high-speed interconnect is suffering with this problem.

So, Cypress is a dual-chip board with a high-speed connection. What's not clear to me is whether the Hong Kong factory is making substrates to mount the chips on, or entire graphics card boards. The former would make more sense if we're trying to justify this as "MCM".

Of course this is all just jumping to conclusions.

Jawed

 

Welcome back Tchock!.....thanks again for correcting my translation.

Agree they wouldn't be making large quantities of RV770 and particularly RV770x2 boards at the moment.

So therefore '7' within the family is the 870 part and they are currently making single and dual core boards for it.

ie: 300k 870(Cypress) and 100k 870x2(Hemlock)

Seems like a lot of Hemlock, wouldn't want to overdose....

 

Sigh, didn't realise that the earlier text was referring to both boards as variants of Cypress, in effect

Jawed

 

Gigabyte will launch 1GB model of HD4770...

http://www.computerbase.de/news/har.../2009/september/gigabyte_radeon_hd_4770_1_gb/

 

I don't consider it nice I consider it too late with juniper around the corner .