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ATI Radeon HD 4770 [the Inq]

AVP

AVP

Senior member
Just saw this on the inquirer...

http://www.theinquirer.net/inq...-hd-4770-slides-leaked

Posts between 10-50% performance increase over the 9800gt at an msrp of $99. Makes me cringe over the $250 I spent on my 8800gt when that came out.

I find it pretty amazing that performance like this can be had at this price, and it isn't as if we are talking about low end graphics, even if it is a low end price / part. At worst you are running less than half a dozen games on medium and the rest on high.

Also are there going to be 48** series cards at 40nm? I haven't seen any speculation or road maps for the next line of cards, just curious.
 
I like the misleading graph. Seriously though, this looks crazy good. Looks to be every bit the equal of the 4850 at a lower price and with lower power consumption. Imagine what will happen when they can bring the advancements from the 4770 to 48xx-class cards. I'm guessing that's what the 5870 will be.

My brother's hurting for a video card. I might get him one of these for his birthday this June. Was originally planning on going nVidia since his current card is an 8800GTS 320MB and it would simplify the drivers, but there's no way I can recommend a GTS 250 with something like this available. I just wish they'd release the damn thing. It's been in the pipeline for how long now?
 
4850's are in the $99-109 range in some stores. i dont see why you would want to give up shaders simply for higher shader clocks. higher clocks are always good though because they mitigate architectural deficiencies in ways that more shaders do not. need to see a review. they have to be better overclockers than the 4850s.
 
I'm going to reserve judgment until I see actual numbers, but if AMD can punch out these cards to meet the demand, they really might nab a large portion of the mainstream market. First to 40nm would be a big leap for them, no doubt. The card's specifications look good, hopefully they'll follow through to real world performance.

EDIT:
Originally posted by: alyarb
4850's are in the $99-109 range in some stores. i dont see why you would want to give up shaders simply for higher shader clocks. higher clocks are always good though because they mitigate architectural deficiencies in ways that more shaders do not. need to see a review. they have to be better overclockers than the 4850s.
Click to expand...
Don't forget the 30W lower power draw. It will probably help overclocking and open up the market for quieter/cooler PCs (e.g. gaming HTPC). Anyway, there could be a couple of ways AMD could market this.
 
Originally posted by: alyarb
4850's are in the $99-109 range in some stores. i dont see why you would want to give up shaders simply for higher shader clocks. higher clocks are always good though because they mitigate architectural deficiencies in ways that more shaders do not. need to see a review. they have to be better overclockers than the 4850s.
Click to expand...

There are other advantages to the 4770 though:

- Lower power consumption, which leads to quieter and cheaper cooling, takes up less space in your case, requires less PSU grunt. Only question is, at 80W, will they require an auxiliary PCIe power connector? Technically, PCIe only supplies 75W, but I wonder if some manufacturers will sell undervolted, possibly even underclocked cards that don't require the extra connector? And passive cooling probably wouldn't be too hard either.
- GDDR5 memory completely makes up for the 128-bit wide memory bus. Basically, you get the same overall numbers as the 4850 but in smaller, simpler, cheaper ways. It remains to be seen how performance will compare. Not to mention the price. If the prices are exactly in line, which do you get? Not an easy choice if the difference is less than $20.
 
thats the thing though, the difference will be less than $20. and i agree, no one should have any doubts about the memory, and i am not knocking it. i'm just saying, we haven't seen any benchmarks yet, and the question is going to be clock rate versus shaders. and the overclocking. it may be like the 4890.
 
I can't find an exact release date. May 4th according to MaxPC. Looks too perfect for my HTPC, assuming noise levels are low.
 
Originally posted by: AstroManLuca
I like the misleading graph. Seriously though, this looks crazy good. Looks to be every bit the equal of the 4850 at a lower price and with lower power consumption. Imagine what will happen when they can bring the advancements from the 4770 to 48xx-class cards. I'm guessing that's what the 5870 will be.
Click to expand...

I saw some actual tests on one of these websites a while back comparing it to the HD4850/HD4830 and it slotted exactly in between them most of the time as far as FPS went.

I think the memory bandwidth maybe be bottlenecking just a little bit because going strictly by processing power these HD4770s are a lot closer to HD4850 than they are to HD4830.
 
My HD4830 can overlock well past HD4850 speeds (overall being just bareley faster, as it has fewer shaders), and I'm guessing this might well overlock to HD4870 type of performance. We'll have to see. I bet you'll be able to buy it less than $99. I can see it completely replacing the HD4830, at the same price, with a little more power, and I'm guessing its cheaper to make.
 
Originally posted by: kmmatney
My HD4830 can overlock well past HD4850 speeds (overall being just bareley faster, as it has fewer shaders), and I'm guessing this might well overlock to HD4870 type of performance. We'll have to see. I bet you'll be able to buy it less than $99. I can see it completely replacing the HD4830, at the same price, with a little more power, and I'm guessing its cheaper to make.
Click to expand...

I think a person would need 940 Mhz on the hd4770 core to equal 800 shaders @ 750 Mhz.

Then the question is will the memory overclock enough to compensate for that? Is the second generation DDR5 used on the HD4770 good enough for that?
 
well someone is already pre-selling this in my country
Powercolor ATI HD 4770 512mb
if the price doesn't change it will be cheaper than the hd4830 here since the hd4830 cost around 5900php

edit
i guess it isn't cheaper i've looked again and the price of the hd4830 went down to 5260php. btw if you look at the negotiation messages below the site the sellers says that the
Launch date is April 28
 
Lol at the graphs, gotta love graphs starting at 0.8... but at least the performance does look realistic, sometimes being only 10% faster

And well, I hate the "worlds first " blabla PR crap, but what can you do, as long as the product delivers its fine I guess
 
Originally posted by: ShadowOfMyself
Lol at the graphs, gotta love graphs starting at 0.8... but at least the performance does look realistic, sometimes being only 10% faster

And well, I hate the "worlds first " blabla PR crap, but what can you do, as long as the product delivers its fine I guess
Click to expand...

The best is the last graph on the VR Zone post. Anyways it looks like we will stuck with the leaky 40nm cards until next year 🙁
 
Originally posted by: Zstream
Originally posted by: ShadowOfMyself
Lol at the graphs, gotta love graphs starting at 0.8... but at least the performance does look realistic, sometimes being only 10% faster

And well, I hate the "worlds first " blabla PR crap, but what can you do, as long as the product delivers its fine I guess
Click to expand...

The best is the last graph on the VR Zone post. Anyways it looks like we will stuck with the leaky 40nm cards until next year 🙁
Click to expand...

Is this voltage leak issue with 40nm really confirmed or just a rumor?

640 shaders@ 750 Mhz using only 80 watts power doesn't sound very leaky to me?
 
Originally posted by: AVP
Posts between 10-50% performance increase over the 9800gt at an msrp of $99. Makes me cringe over the $250 I spent on my 8800gt when that came out.
Click to expand...

A former friend of mine spent around $600 on an X850XT when those came out (maybe on the first day they were available). Talk about cringe-worthy.

Originally posted by: AstroManLuca
- Lower power consumption, which leads to quieter and cheaper cooling, takes up less space in your case, requires less PSU grunt. Only question is, at 80W, will they require an auxiliary PCIe power connector? Technically, PCIe only supplies 75W, but I wonder if some manufacturers will sell undervolted, possibly even underclocked cards that don't require the extra connector? And passive cooling probably wouldn't be too hard either.
Click to expand...

I was thinking about that too. If it is only a couple watts off, why didn't ATI opt for shaving off some performance in exchange for not needing the PCIe power connector and a better cooler? I've seen the 4670 often recommended (heck, I've recommended it myself) as the best card available that does not need additional power. This makes for an easy upgrade for typical cheap pre-built systems from the likes of Dell/HP. Making it require additional power just kills that "easy upgrade" market. Just lower voltage a tad and knock 75MHz or so off the core clock and lose the extra power requirement plus manufacturers can use a cheaper fansink. Lower BOM costs means either lower selling price or higher margins. I'm sure at a few MHz lower the card will still perform well.

The 4750 will need additional power as well due to using GDDR3 that needs more voltage. This leaves the 4670 as the past and current king of not needing additional power... until something else comes out. 😉
 
Seeing how the "4750/70" in the Guru3D preview was clocked 100 MHz slower than the final specs and scored right between the 4850 and 4830, it looks like this thing is going to be even with -- possibly even faster than -- the 4850. 800MHz GDDR5 and dual slot cooling makes me think this thing will have a lot of headroom, especially the memory which is probably the biggest bottleneck.
 
Originally posted by: Zap

A former friend of mine spent around $600 on an X850XT when those came out (maybe on the first day they were available). Talk about cringe-worthy.
Click to expand...

Ok, I will quiet down now!! Hehe...that is rough 🙁 I mean I know we still have parts that release at absurd prices when they are top of the line and prices don't stick around for too long up there, but it seems that they have definitely come down quite a bit, even for new parts.

I wonder how long it will take to return to that kind of pricing for new video cards more commonly when the economy rebounds. I remember the ATi 9800 pro being $400 and not thinking much of it, etc.

Anyways...I found it hilarious that The Inquirer did not include the last slide found at Vr-Zone. Almost as funny as the slide itself.
 
Gotta say I actually like seeing what AMD is doing pushing some serious price/performance. Not much excuse to stay away from PC gaming when there are so many great options for less than the cost of 2 new games.
 
Originally posted by: bunnyfubbles
Gotta say I actually like seeing what AMD is doing pushing some serious price/performance. Not much excuse to stay away from PC gaming when there are so many great options for less than the cost of 2 new games.
Click to expand...

Yeah that's a good way to put it. The problem with PC gaming is that it suffers from piracy too much, and it's not as easy to enjoy games in front of the television with a bunch of friends.
 
Originally posted by: HurleyBird
Seeing how the "4750/70" in the Guru3D preview was clocked 100 MHz slower than the final specs and scored right between the 4850 and 4830, it looks like this thing is going to be even with -- possibly even faster than -- the 4850. 800MHz GDDR5 and dual slot cooling makes me think this thing will have a lot of headroom, especially the memory which is probably the biggest bottleneck.
Click to expand...

I know it says 650-700 for the clock in these specs but looking at the processing power of the 4670 with 320 SP @ 750 Mhz it appears to double that with the HD4770 would take 750 Mhz on the core also.

So I wonder how correct these specs are? Or maybe the memory figures into the total processing power? (this makes sense to me that it would thus making a straight comparison of Stream processors vs clock speed difficult)

http://www.guru3d.com/article/...-review-preview-test/2

 
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