AMD RV740 is Radeon HD 4770 / 4750, Launch in May

[onethreehill]

VR-Zone learns that AMD is planning to launch two new mainstream cards based on 40nm RV740 in May, a month after releasing the high end 55nm RV790 cards. There will be two versions; Radeon HD 4770 (RV740XT) and Radeon HD 4750 (RV740PRO).

Radeon HD 4770 is equipped with 512MB of GDDR5 memories clocked at 800MHz while Radeon HD 4750 is equipped with 1GB GDDR3 memories. Core clocks for both cards stood at 700MHz. The RV740 cards will be the first series from AMD to feature Triple-Phase power solution for more efficient power design.

CJ let us know that Radeon HD 4770 is expected to be priced at ~US$119 targeting GeForce GTS 240 while HD 4750 is expected to be priced at ~US$99 targeting GeForce 9600 GT..............
Source: VR-Zone (http://vr-zone.com/articles/amd-rv740-is-radeon-hd-4770--4750-launch-in-may/6579.html?doc=6579)

[Firestrider]

I'm guessing the 4750 is supposed to perform marginally better than the 4670 and the 4770 is supposed to perform marginally worse than the 4830?

These will probably have low idle and load power consumptions: 40 nm and 3 power states :)

Next they should allow for entire SIMD units to be turned off when not in use.

[ToTTenTranz]

If the HD4750 uses GDDR3 through a 128bit bus, then it won't be any competition for Geforce 9600GT, or GTS220, or whatever is nVidia's next name for G94.


Nevertheless, I want these cards in a notebook, dammit!

[Macadamia]

3 Phase Power (Regulation) =/= 3 Power states.

I think the article probably meant the first midrange card to have 3-phase voltage regulation instead of the regular 2 on the reference board (IINM)


If the HD4750 uses GDDR3 through a 128bit bus, then it won't be any competition for Geforce 9600GT, or GTS220, or whatever is nVidia's next name for G94.

It's not as badly bandwidth limited as you think, actually. 4670 did quite good despite a supposedly implied memory bottleneck.

[dartai7]

From now tell May Nvidia would probably have released newer video cards

[Macadamia]

From now tell May Nvidia would probably have rebranded older video cards

Fixt for truth.

[Firestrider]

Who knows maybe they have 480 shader processors, and the GDDR5 will be enough bandwidth on a 128-bit bus.

The 4670 is about equivalent to the 9600GT at low resolutions, but it really faulters when you increase it.

[Pinacolada]

This cards were supposed to be out in March and now May ? So it seems RV800 and GT300 will come Q3/Q4 :(

[Nedjo]

This cards were supposed to be out in March and now May ?

what makes you think they've supposed to be out in March?

as far as I remember all leaked info by now pointed towards Q2...

[ToTTenTranz]

I think May is a bit late for these cards, it would make perfect sense if they were out at the same time as nVidia would rename their G92 for the second time. This is probably because of TSMC's problems with 40nm.

If they really get it right with the power consumption, it could not just be great for laptops as it could also be a good candidate for future MCM GPUs.

Tiny GPUs with 640 shaders :slobber:


This would be in my wishlist, on par with VIA making an 8.9-inch netbook platform with Nano and Chrome 500, and 8 cell battery :rocker:

[zerazax]

These are 40nm so its up to when TSMC is fixed with their process. That appears to be done by May

40nm + 700 Mhz clocks = tons of OC headroom imo. 640 shaders in those little suckers too

Also, the GDDR5 version means it effectively is GDDR3 w/ a 256-bit bus so I don't think it will be memory bandwidth limited at all. ANd for $100, this is going be an incredible card

[Macadamia]

I want a new graphics card with more shader power for Burnout Paradise (ENB Series mod). So this is definitely on the list for now.

[ToTTenTranz]

These are 40nm so its up to when TSMC is fixed with their process. That appears to be done by May

40nm + 700 Mhz clocks = tons of OC headroom imo. 640 shaders in those little suckers too

Also, the GDDR5 version means it effectively is GDDR3 w/ a 256-bit bus so I don't think it will be memory bandwidth limited at all. ANd for $100, this is going be an incredible card

The GDDR5 HD4770 ($120) should have little problem dealing with 8800GT/9800GT/GTS240, I never said that card could be a disappointment.

The $100 GDDR3 HD4750, on the other hand, could have problems facing the 9600GT because it will have half the memory bandwidth of its competitor.

Lots of shaders won't make a difference once the card is bottlenecked by its bandwidth.
Look at HD4650's example. The standard HD4650 has DDR2 with a 128bit bus, it has the same ammount of shaders as the HD2900XT but the bandwidth is about 1/6th. The card underperforms badly.

[G80]

Nice cards. I love low power stuff. Maybe my computer will be silent one day :up:

[acidpython]

Nice cards. I love low power stuff. Maybe my computer will be silent one day :up:

says the person with a G80 avatar :D. lol, I agree most OEM computers these days fit their computers with low power PSU's that can still run cards like the 4650.

[tajoh111]

These are 40nm so its up to when TSMC is fixed with their process. That appears to be done by May

40nm + 700 Mhz clocks = tons of OC headroom imo. 640 shaders in those little suckers too

Also, the GDDR5 version means it effectively is GDDR3 w/ a 256-bit bus so I don't think it will be memory bandwidth limited at all. ANd for $100, this is going be an incredible card

Why would this be 700mhz and 640 shaders when the 4830 has 640 shaders and 575 mhz.

This thing is likely going to be slower than the 240gts because the 4830 although beats the 9800gt/8800gt, it still loses in some games(although the 4830 is still faster overall). Not just NV biased ones either.

Since I would imagine the 4770 is significantly slower than the 4830 and the gts240 is 12% faster than the gts240, the 4770 should be the slower one as a result.

Since the 9800gtx+/gts250 is priced at 130(or atleast by the time this is released) which is definitely faster than the 4830 overall, does it make sense to even buy a either the gts240 or the 4770.

[Helmore]

4830 is not really an ideal chip to sell for AMD, so I think they will be replacing it with 4770 once it is launched.

[tenebre]

Why would this be 700mhz and 640 shaders when the 4830 has 640 shaders and 575 mhz.

This thing is likely going to be slower than the 240gts because the 4830 although beats the 9800gt/8800gt, it still loses in some games(although the 4830 is still faster overall). Not just NV biased ones either.


it will be 640SP at the least. why? because less deosn't make any sense. And it's aimed at 4850, not 4830.

[zerazax]

The RV740 is supposed to replace the 4830 and 4850

[tajoh111]

I am bewildered. The rv740 = 4770 and is supposed to be the replacement for the 4830 and 4850.

I thought higher number means better performance from ATI, especially when it is still in the same 4xxx range. That's confusing me and I am kind of a techie.

[zerazax]

It actually means price range more than performance, though in general, higher price = higher performance

First 3 numbers tell the whole story. Like for 4870:

4 = Architecture (R7xx gen)
8 = Enthusiast Pricing Group
7 = XT

Or 4850 is the R7xx gen architecture, enthusiast pricing group, but the 5 is the PRO edition.

So 4770 is of the R7xx gen, in the price group between mainstream and enthusiast (between 4850 and 4650) and the XT edition.

[LordEC911]

I am bewildered. The rv740 = 4770 and is supposed to be the replacement for the 4830 and 4850.

I thought higher number means better performance from ATI, especially when it is still in the same 4xxx range. That's confusing me and I am kind of a techie.
4770 should perform between the 4830 and the 4850, in some situations close to a 4850.
4750 is probably performing right around a 4830, depending on clocks.
I am still expecting a 4730 though with disabled parts to better fill the gap between the 4830/4750 and the 4670/3870.

[tajoh111]

It actually means price range more than performance, though in general, higher price = higher performance

First 3 numbers tell the whole story. Like for 4870:

4 = Architecture (R7xx gen)
8 = Enthusiast Pricing Group
7 = XT

Or 4850 is the R7xx gen architecture, enthusiast pricing group, but the 5 is the PRO edition.

So 4770 is of the R7xx gen, in the price group between mainstream and enthusiast (between 4850 and 4650) and the XT edition.

I got the xx70 was the xt version and the xx50 was the pro version, but higher number would be a better system I think. If the 4770 performs better than the 4830, how is the consumer going to know. Price might be an indicator, but places like bestbuy(atleast in canada), don't update their prices very often so the 4830 will probably be more costly than the 4770 because the 4830 will still sell for its original release retail price. They should have named this the 4840 or something.

Especially the 47xx series. Isn't x7xx a new series in general. From ATI all I can remember is x4xx, x6xx, x8xx
x9xx. I remember a 700xt.

I can imagine this getting a bit confusing depending on how long the 48xx series sticks around.

[Helmore]

I got the xx70 was the xt version and the xx50 was the pro version, but higher number would be a better system I think. If the 4770 performs better than the 4830, how is the consumer going to know. Price might be an indicator, but places like bestbuy(atleast in canada), don't update their prices very often so the 4830 will probably be more costly than the 4770 because the 4830 will still sell for its original release retail price. They should have named this the 4840 or something.

Especially the 47xx series. Isn't x7xx a new series in general. From ATI all I can remember is x4xx, x6xx, x8xx
x9xx. I remember a 700xt.

I can imagine this getting a bit confusing depending on how long the 48xx series sticks around.

This won't be a problem anymore once the 4830 is gone and that's probably what's going to happen.

[zerazax]

I got the xx70 was the xt version and the xx50 was the pro version, but higher number would be a better system I think. If the 4770 performs better than the 4830, how is the consumer going to know. Price might be an indicator, but places like bestbuy(atleast in canada), don't update their prices very often so the 4830 will probably be more costly than the 4770 because the 4830 will still sell for its original release retail price. They should have named this the 4840 or something.

Especially the 47xx series. Isn't x7xx a new series in general. From ATI all I can remember is x4xx, x6xx, x8xx
x9xx. I remember a 700xt.

I can imagine this getting a bit confusing depending on how long the 48xx series sticks around.

As Helmore states, it looks like the 4830 and 4850 will be EOL'd and the 4870 will be replaced by the 4890. Any 4850 and 4870's left will be left over stock as ATI is moving to 40nm so it'll just be:

4870 -> 4890
4830, 4850 -> 4770

[tajoh111]

Is that the case?

The 4890 is likely too be 250 dollars, while the 4770 is 120 dollars. There still a huge gap to be filled in the middle.

[perkam]

4770 Xfire should be interesting to say the least.

Perkam

[ToTTenTranz]

4770 Xfire should be interesting to say the least.

Perkam

Because it will supposedly replace the current 2*HD4830 sweetspot. Yes, I think so too.