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How fast will the radeon 5770 be upon release?

LCD123

Member
Sep 29, 2009
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Explain your vote. Also if you have any ideas/rumors/speculation on clocks and shaders, out with it! I predict the 5770's core will be as powerful as a 4870 or even 4890 but it's memory bandwith will be much less than a 4830. Therefore, I voted equal to a 4830 in performance. But I could be wrong and the 4830 may still be faster because it has much more memory bandwith!
 

toyota

Lifer
Apr 15, 2001
12,957
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we already have a thread for this. also with a 128 bit bus all the 5770 would have to have 3600 memory to equal it. how could the 5770 possibly be slower than a 4830 when it will have much more sp,tmu, rop and at least equal or better bandwidth??? hell the 4770 already beats the 4830.
 

MrK6

Diamond Member
Aug 9, 2004
4,458
3
81
I didn't vote, because there's no option for it, but the design of the card is too different from any of the previous designs to call it a square match. All other things being similar between the designs except for the obvious changes (different amount of shaders, 128-bit bus, clock speeds), I'd venture a guess to say it'd perform around the 4890. More so at lower resolutions, but its halved memory bandwidth might hold it back at higher resolutions.
 

Stoneburner

Diamond Member
May 29, 2003
3,491
0
76
1. Why speculate the cards are going to be here shortly
2. Why would the 5770 perform en par with a 4830 when the 4770 performs better than the 4830? So the 4770 > 5770?
 

LCD123

Member
Sep 29, 2009
90
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Ive been doing math in my head. Wouldn't this give the hd57xx a memory bandwith of about 73GB/s? As for a core clock of 800MHz with 1120sp, this represents a 32% increase in core power vs. hd4890 but the hd4890 has 71% more memory bandwith! The hd57xx does have more memory bandwith than the hd4850(because of gddr3)

I checked hd4770 and it has a little less memory bandwith than the hd4830 but the core is almost as powerful as the hd4850. Thanks to gddr5 memory, the hd4770 is faster than I thought. Checking a review, it appears to perform between a hd4830 and hd4850. I guess the hd57xx could perform between a hd4850 and hd4870. Any chance ATI might opt for slower gddr3 memory instead of gddr5? I had based the hd5770's performance on it using gddr3 memory, but if they go with gddr5 then yea itll definately beat the hd4830 and possibly the hd4850!
 

toyota

Lifer
Apr 15, 2001
12,957
1
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Originally posted by: LCD123
Ive been doing math in my head. Wouldn't this give the hd57xx a memory bandwith of about 73GB/s? As for a core clock of 800MHz with 1120sp, this represents a 32% increase in core power vs. hd4890 but the hd4890 has 71% more memory bandwith! The hd57xx does have more memory bandwith than the hd4850(because of gddr3)

I checked hd4770 and it has a little less memory bandwith than the hd4830 but the core is almost as powerful as the hd4850. Thanks to gddr5 memory, the hd4770 is faster than I thought. Checking a review, it appears to perform between a hd4830 and hd4850. I guess the hd57xx could perform between a hd4850 and hd4870. Any chance ATI might opt for slower gddr3 memory instead of gddr5? I had based the hd5770's performance on it using gddr3 memory, but if they go with gddr5 then yea itll definately beat the hd4830 and possibly the hd4850!
the 4770 is almost as fast as the 4850 so there is NO question that the 5770 will easily be faster than a 4850. even if its only 960sp it will likely be faster than the 4870. we dont know what the final specs will be so just sit tight.
 

Udgnim

Diamond Member
Apr 16, 2008
3,654
83
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I believe the 5770 is supposed to have a MSRP of $200, so I'd venture to guess it'll be as fast as other $200 dollars cards currently out on the market
 

cbn

Lifer
Mar 27, 2009
12,968
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Originally posted by: LCD123
Ive been doing math in my head. Wouldn't this give the hd57xx a memory bandwith of about 73GB/s? As for a core clock of 800MHz with 1120sp, this represents a 32% increase in core power vs. hd4890 but the hd4890 has 71% more memory bandwith! The hd57xx does have more memory bandwith than the hd4850(because of gddr3)
I think HD5750 will be faster than HD4890 at lower resolutions but possibly slower at higher resolutions with AA/AF turned on.

Comparisons at 1080p should be the most interesting (considering these monitors are cheap now).
 

happy medium

Lifer
Jun 8, 2003
14,387
475
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Originally posted by: Just learning
Originally posted by: LCD123
Ive been doing math in my head. Wouldn't this give the hd57xx a memory bandwith of about 73GB/s? As for a core clock of 800MHz with 1120sp, this represents a 32% increase in core power vs. hd4890 but the hd4890 has 71% more memory bandwith! The hd57xx does have more memory bandwith than the hd4850(because of gddr3)
I think HD5750 will be faster than HD4890 at lower resolutions but possibly slower at higher resolutions with AA/AF turned on.

Comparisons at 1080p should be the most interesting (considering these monitors are cheap now).
I think you meant 5770 not 5750? right?
 

cbn

Lifer
Mar 27, 2009
12,968
221
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Originally posted by: happy medium
Originally posted by: Just learning
Originally posted by: LCD123
Ive been doing math in my head. Wouldn't this give the hd57xx a memory bandwith of about 73GB/s? As for a core clock of 800MHz with 1120sp, this represents a 32% increase in core power vs. hd4890 but the hd4890 has 71% more memory bandwith! The hd57xx does have more memory bandwith than the hd4850(because of gddr3)
I think HD5750 will be faster than HD4890 at lower resolutions but possibly slower at higher resolutions with AA/AF turned on.

Comparisons at 1080p should be the most interesting (considering these monitors are cheap now).
I think you meant 5770 not 5750? right?
1120 shaders @725 Mhz isn't that something like ~1.5 TFLOPs?

Compare that to 800 shaders @ 850 Mhz which is something like 1.35 TFLOPs.

But then other people have said they were skeptical on how only 16 ROPs would affect performance (in addition to possible memory bandwidth limitations)

I personally am hoping ATI made some comprimises in this chip to enhance 1080p performance at the expense of 2560x1600.
 

Qbah

Diamond Member
Oct 18, 2005
3,754
10
81
Since the first midrange cards are always HDx6xx, I'd say if a HD5770 will show up in the future, it will be used as a testing platform for something new.

Since the HD4670 was between the HD3850 and HD3870, I'd say the next midrange part will be called HD5670 and will be between a HD4850 and HD4870 in performance - mostly due to a 128bit+GDDR5 memory (so around the level of HD4850). Add more shaders (or even 800) and it should be just a tad slower than a HD4870. So it will be ~90% of HD4870 and won't need an extra power cable. The perfect midrange card.

The low-end will have 160 shaders with 64-bit bus with GDDR3 - you don't really need anything else there.
 

toyota

Lifer
Apr 15, 2001
12,957
1
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Originally posted by: Qbah
Since the first midrange cards are always HDx6xx, I'd say if a HD5770 will show up in the future, it will be used as a testing platform for something new.

Since the HD4670 was between the HD3850 and HD3870, I'd say the next midrange part will be called HD5670 and will be between a HD4850 and HD4870 in performance - mostly due to a 128bit+GDDR5 memory (so around the level of HD4850). Add more shaders (or even 800) and it should be just a tad slower than a HD4870. So it will be ~90% of HD4870 and won't need an extra power cable. The perfect midrange card.

The low-end will have 160 shaders with 64-bit bus with GDDR3 - you don't really need anything else there.
what are you smoking? there will be a 5770 and 5750 launching soon and that has been known ever since we learned about the 5xxx series. the only question about the 5770 and 5750 are the exact specs.

edit: as of yesterday this should be the specs and the card is already getting listed. http://www.fudzilla.com/content/view/15838/1/
 

StinkyPinky

Diamond Member
Jul 6, 2002
6,566
486
126
Originally posted by: Qbah
Since the first midrange cards are always HDx6xx, I'd say if a HD5770 will show up in the future, it will be used as a testing platform for something new.

Since the HD4670 was between the HD3850 and HD3870, I'd say the next midrange part will be called HD5670 and will be between a HD4850 and HD4870 in performance - mostly due to a 128bit+GDDR5 memory (so around the level of HD4850). Add more shaders (or even 800) and it should be just a tad slower than a HD4870. So it will be ~90% of HD4870 and won't need an extra power cable. The perfect midrange card.

The low-end will have 160 shaders with 64-bit bus with GDDR3 - you don't really need anything else there.

Dude...have you even read anything in this thread? 5770 is out in about two days man.
 

Qbah

Diamond Member
Oct 18, 2005
3,754
10
81
Whoops, seems I'm a bit behind. Not really interested in this segment for the latest gen tbh (I already have a HD4870). Just ignore my previous post then :)
 

bunnyfubbles

Lifer
Sep 3, 2001
12,248
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Originally posted by: nemesismk2
Although I would love to get 4890 level performance out of the 5770 I voted for 4870 level because it's more realistic.
If that is the case, I hope the 5770 isn't priced @ $199, 1GB 4870s can be had for ~$150 before rebates.
 

MODEL3

Senior member
Jul 22, 2009
528
0
0
Fudzilla and mymypc is saying that both 5750 & 5770 is 1120SP design.

But the number of SP units (die size of SPs - defects) is so high that i guess a logic thing is the 5750 to have 2 SIMD units disabled (-160SP).

I am not entirely convinced that Fudzilla & mymypc specs are correct.
 

crisium

Platinum Member
Aug 19, 2001
2,632
593
136
I'm guessing 5750 will be slightly faster than 4850 but slower than 4870. Then the 5770 will probably be about equal to 4870, perhaps better depending on it's exact specs. But I cannot see 4890 performance with 128-bit at 1120SP.
 

toyota

Lifer
Apr 15, 2001
12,957
1
0
Originally posted by: Crisium
I'm guessing 5750 will be slightly faster than 4850 but slower than 4870. Then the 5770 will probably be about equal to 4870, perhaps better depending on it's exact specs. But I cannot see 4890 performance with 128-bit at 1120SP.
why not? 320 more sp plus more tmu and equal amount of rops with similar clockspeeds to the 4890 on that could lead to a pretty fast card. it should certainly be as fast or faster than the 4890 in most cases if those specs are true. we just have to see how much the lower memory bandwidth will hurt it.
 

cbn

Lifer
Mar 27, 2009
12,968
221
106
Isn't Juniper a 180mm2 chip?

So essentially this was supposed to be a DX11 optical shrink of HD48xx right? Or am I wrong about this?
 

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