Radeon R9-M295X

Not within a restricted power envelope it's not.

See 780M vs 680M, when you take them to the same real power the 780M will always win.

 

I`m pretty sure most people would prefer 30CUs @ 700MHz over 28CUs @ 825MHz for example.
More shaders to play with if they want to overclock.

So fingers crossed M295X got 30 or 32 of them.

 

Yes you are correct about the power draw being higher with the less shaders/higher-clocked part. I was thinking of desktop cards, e.g. 780 GHz Edition beating Titan. A fully-enabled GPU is always gonna be more efficient than one with functional units disabled due to being faster on the same die and TDP. Reason that the different GK110 parts are all 250W despite performance variations. Even 770 is already at 230W and it is much slower.

 

Yes the 770 is the GK104 being clocked to the limits of its efficiency curve.

It's all due to voltage causing exponential power rises and more voltage being required to hit those higher clocks.

 

Exactly, for example 28CUs at 800MHz will be faster than 32CUs at 700MHz, even though the GFLOPS is exactly the same. The reason here being is the fact that operations not requiring all the extra shaders will complete faster and even more importantly while your TMUs and Shaders are reduced when the CUs are cut, the ROPs stay exactly the same, at those clocks mentioned above in ROP bound situations we are talking about up to 15% performance improvement at exactly the same FLOPS all thanks to the about 15% higher clocks on those ROPs.
Stuff like these has happened before, either AnandTech or Tom's Hardware has done a gaming review on professional cards, and the Pitcairn XT based FirePro W7000 just destroyed the much more expensive and higher GFLOPs Tahiti Pro based FirePro W8000. In fact it was only slightly slower than the Tahiti XT based FirePro W9000, all because of those higher clocks. Of course this is only in games and when it came to compute Tahiti destroyed everything at the time.

But you guys are right though, more CUs at lower clocks are much more efficient, as long as we are talking about the same GPU. Compare a GPU with a smaller die to a larger die and you can throw this rule into the water.

 

Here.

So, can we expect at least 45% over 7970m?

 

That 2x as many triangles per clock, 4x as many ACE units, many more shaders ++. It should be pretty powerful. But I have no idea how much. Need to see R9 285 or W7100 benchies first.

 

Saturday, August 23rd 10AM EDT.
Mark it on your calender

Live streaming will happen here :thumbsup:
Twitch

AMD to Celebrate 30 Years of Graphics and Gaming in Live Webcast | VideoCardz.com

 

I ticked it with a sharpie on my display

 

Awesome! I hope we get some mind blowing news

 

I was expecting an AMD event with alL the recent teasers but not exactly a live stream, at least we can all watch it live.

 

Live streaming usually means big news. Will be fun to watch for sure.

If its 32CU, I`m starting to think it might go toe to toe vs 980M perhaps.
I`m very hopeful. XDMA instead of traditional crossfire should mean much better scaling vs 880M SLI, so I think we are in for a serious Kepler kicking

 

I got a pack of MW pop-corn ready

Mixed expectations everywhere, 30-32, and some say that 285X would be 384bit as well (not that we care). I hope for full-blown chip with cut bus (given that it's indeed 384bit) and reduced clocks.

 

Very excited!! What time is that in Japanese time

 

23rd 11p.m. in Japan

 

While I am a huge AMD fan, I am not sure it will go toe to toe with 980m haha. But it won't be that far behind at all, and indeed XDMA is great news for dual graphics users!

I just wish more notebook manufacturers used AMD GPUs, specially the high end ones.

 

With all the crap with NVIDIA's drivers and 880M's, I'm appreciating my 7970M even more... Hopefully the R9 295MX is a world beater

 

The future of human P375SMA SLI GTX880M R9 M295X I7 4930MX 4900MQ after the explosion

are they already selling m295x or am i stupid?

 

I am selling mine 680M and 780M are still better

 

Looks like the M295X will cost the same price as a 880M, isn'it?

 

Looks a lot like this one from taobao
δÀ´ÈËÀà P375SMA SLI GTX880MÍ걬R9 M295X I7 4930MX 4900MQ-ÌÔ±¦Íø

I wouldnt take the risk of buying from any of them at this point

 

Those ads are there from quite some time. I seriously doubt that they are anything else than scam, or in the best case - preorder. Or it could be a typo.

 

Its just a title with M295X
There is nothing about it in the content

 

Yeah I know.
Probably add the missing content later when they get the card. Right now its there just to lure people to preorder I think. Sneaky

 

Surprise surprise it is a Chinese website right? Sneaky is the norm

 

http://instagram.com/AMD

 

i feel like if they did that they would be false advertising like they did with the HD 6990m. the desktop version is two 6970's but the 6990m is just a little better than the 6970m. so if they made a m295x itll probably be a single gpu

 

No it won't, desktop dual GPU is called R9-295X2, Mobile is just R9 M295X, there are rumors of faster clocked Hawaii being released as R9 295X so it should be fine.

 

Well there's definitely a GPU announcement so maybe M295X will be here on Saturday and in production machines in a few weeks.

 

Shipping in notebooks in September according to one reseller.
Hopefully they will announce it on Saturday and NDA ends with reviews of it.

Looks like AMD might be ready to show something big. This could be the red Maxwell

 

If performance and price are right, I'll be interested... Although who knows if it will even work in my current Clevo.

 

Agreed. And hopefully it will. It is always nice to have options regarding that.

 

Wasnt it the Hawaii-event last year where they didnt reveal any numbers on the top-gpus? Hope it wont be the same on Saturday.

 

Good day. Friends, I need the original vBios for R9 M290X. Anyone can help and give me it? If you have in your laptop graphics card M290X just record vBios program GPU-Z and give me. Thanks.

 

If you read the few hints available you know it is AMD`s answer to Maxwell they will present August 23rd. Tonga is just a start of upcoming graphic cards. R9 300 series will continue improving this with HBM.
R9 285/W7100/M295X is a response to Nvidia`s first generation (GM1xx) series. R9 300 and GM2xx will have further improvements.

Firepro W7000:
1280 shaders
<150W

Firepro W7100:
1792 shaders
<150W

That is the power reduction.

Firepro W7000
2 Triangles/clock

Firepro W7100:
4 Triangles/clock

That is the performance efficiency increase. Plus W7100 have 4x as many ACE units as W7000 which will further improve performance.

 

Plus if the earlier leaks are accurate and the R9 M295X does have 32CUs/2048SPs it will be an even greater performance increase over R9 M290X.
Also Cloud do you have any info on the M300 series, especially about the HBM.

 

Well if you devide 150 on 28 you get roughly 6W per CU. So 4 more CUs than W7100, you get 150W+(6W*4CUs)=174W.
However, and this one is a reason why M295X may only have 28CUs:
W7000 had 1280 cores and a TDP of 150W
7870 had 1280 cores and a TDP of 175W
7970M had 1280 cores and a TDP of 100W.

W7100 have 1792 cores and a TDP of 150W
R9 285 is rumored to have the same core amount and probably higher TDP due to higher clocks.
So I think R9 M295X may have 28CUs as well. The ozone3d data that read 32CUs may have read the chip wrong.

Nobody knows anything regarding 300 series I think. But AMD have said they are moving to 20nm next year and HBM is already ready so I think 300 series will have both.

 

It's best not to put too much importance on those calculations, since we have no idea about clocks or voltages, and some optimizations alone for lower TDP (similar to what happened with Kaveri) can easily make those calculations wrong when compared to reality. As for what AMD said about HBM it could just be about high end desktop 390 cards.

 

Yes, but 7870 runs at 1GHz and 7970m at 850MHz

 

We have one M295X runs at 800MHz. Click here
And another one running at 723MHz. Click here

I guess if it does run at 725MHz it may have more CUs. 800MHz on the other hand, we could be looking at R9 285 at 1GHz and M295X at 800MHz almost like 7870 and 7970M.

Sure, but you kinda get the idea that it could go either way. I`m of course hoping for 32CUs, but with 28CUs I have no idea how the card will perform vs 880M. I think it depends on that Triangles/clock and what it means in terms of gaming performance.

 

That would be te ghz edition 7870 stock had 800mhz core clock too

 

The 7870 was always launched as the ghz edition. Maybe you are thinking of the 7850? It launched with an 860mhz core clock.

 

Well my 7970M could probably do 1000/1500 with 1.15V (Does 975/1450 at 1.10V and 925/1350 with 1.05 stock voltage)... Nothing new

 

My original 7970m did 1000/1625 at stock voltage. Always want the early samples with AMD.

 

Are you thinking about the 7970 and 7970GHz version perhaps?

 

Nah, it's as meaker said, 7870 was originally spec'd as 800mhz core clock but launched at 1ghz, and promply became Ghz edition by all manufacturers. Afterwards, 7970 and 7950 had their respective editions. Altho 7950 didn't hit the ghz...

nvm: I confused the clockspeeds, the 800mhz spec originally was for 7850, not 7870.

 

According to Sweclockers, AMD will present Tonga during the live broadcast this Saturday. Both R9 285 (Tonga Pro) and R9 285X (Tonga XT) will be presented (Hopefully R9 M295X too) and these graphic cards will be sold from September 2. NDA also ends that date so reviews will be out then.

The source I spoke to was spot on with September availablity for R9 M295X. Now lets all hope it will be based on Tonga XT (32CUs and 2048 shaders) and not Tonga Pro (28CUs and 1792 shaders).

EDIT:
Videocardz just post this

 

Oh sweet! I'll wait at least a month or two before I get anything then, was looking at the 880M but if this comes out I'll go for it!

 

Finally! Either spec would be a jump up from the 7970M

 

Here's hoping for 285X chip