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It looks like the 'real' /affordable RDNA3 + next gen NV desktop launch won't launch until September. Thoughts?
- Thread starter g67575
- Start date
Lol, people still clinging on to Navi32 rumours.
Yes eventually, but no sign of life at the moment.
The rumour mill got it wrong once again.
If you think about it, N32 is more likely to be the successor to the 6700X and the 6700 (both are Navi22), you should get around 20 extra CUs.
Yes eventually, but no sign of life at the moment.
The rumour mill got it wrong once again.
If you think about it, N32 is more likely to be the successor to the 6700X and the 6700 (both are Navi22), you should get around 20 extra CUs.
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The Navi21 cards are all on sale now, priced competitively against the RTX 4070, all with 4GB more VRAM.
They'll be gone this quarter I reckon.
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You can get the top Navi 21 card for around £640. Or, you could yesterday, it's sold out now.
Both the RX 6900 XT and the XTX are (a bit) faster than the RTX 4070.
The RX 6800 is going for <£500.
Some websites aren't even selling any Navi21 graphics cards are more.
The RX 6900 XT is pretty hard to find anywhere.
You think AMD will still be selling Navi21 cards in July then?
I think the RX 6800 XT will sell reasonably well too, because of it's higher performance in demanding games like The Last of Us (which the 6900 series do well in also):
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70 CU Navi 31 is approx. equal to an RTX 3080 TI according to techpowerup. I suppose they might be able to eke a bit more out of it by clocking it higher - but the boost clock speed of the W7800 is already 2499 Mhz (~ 100 Mhz higher than the RX 7900 XT), which they presumably calculated by looking at the FP32 processing power.
The other thing to note, is that the number of ROPs and amount of L3 cache is lower than the RX 7900 XT.
I think it will need to be a cheaper than the RTX 4070 TI, because it is likely to be a bit slower.
EDIT - Just realised that the FP32 processing power of RDNA3 (RDNA2 as well I think?) cards is calculated based on the boost clocks, not the game clocks. So, the actual FP32 processing power is lower in games, than the specs suggest.
For the RX 7900 XT - In games, you can expect an FP32 processing power of (2025 MHz x 5376) x 2 = 21.7 TFlops x 2 = 43.5 TFlops at stock. Not 51.48 TFlops as the specs suggest.
For the 70 CU Navi 21 GPU - In games, you can expect an FP32 processing power of (2025 MHz x 4480) x 2 = 18.1 TFlops x 2 = 36.2 TFlops at stock. We don't know the exact game clock yet, but it's likely to be similar to the RX 7900 XT.
The same applies to the pixel and texture rates also.
The RTX 3080 TI has a FP32 processing power of 34.1 TFlops, according to the spec.
The other thing to note, is that the number of ROPs and amount of L3 cache is lower than the RX 7900 XT.
I think it will need to be a cheaper than the RTX 4070 TI, because it is likely to be a bit slower.
EDIT - Just realised that the FP32 processing power of RDNA3 (RDNA2 as well I think?) cards is calculated based on the boost clocks, not the game clocks. So, the actual FP32 processing power is lower in games, than the specs suggest.
For the RX 7900 XT - In games, you can expect an FP32 processing power of (2025 MHz x 5376) x 2 = 21.7 TFlops x 2 = 43.5 TFlops at stock. Not 51.48 TFlops as the specs suggest.
For the 70 CU Navi 21 GPU - In games, you can expect an FP32 processing power of (2025 MHz x 4480) x 2 = 18.1 TFlops x 2 = 36.2 TFlops at stock. We don't know the exact game clock yet, but it's likely to be similar to the RX 7900 XT.
The same applies to the pixel and texture rates also.
The RTX 3080 TI has a FP32 processing power of 34.1 TFlops, according to the spec.
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Is it possible to fix the voltage on RDNA3 GPUs?
Techpowerup's RX 7900 XT review suggests that the actual clock rate in games is largely determined by the voltage the card is using at the time:
From here: https://www.techpowerup.com/review/amd-radeon-rx-7900-xt/38.html
So, fixing the voltage at 0.95v or 1.0v should allow for higher and more consistent clocks in games.
Techpowerup's RX 7900 XT review suggests that the actual clock rate in games is largely determined by the voltage the card is using at the time:
From here: https://www.techpowerup.com/review/amd-radeon-rx-7900-xt/38.html
So, fixing the voltage at 0.95v or 1.0v should allow for higher and more consistent clocks in games.
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Techpowerup's rumoured spec is up for the RX 7800 XT, which will apparently be based on the Navi32 GPU die:
www.techpowerup.com
It looks okay, seems like it will perform similarly to the top Navi21 GPUs.
And best the RTX 3080 and RTX 4070.
I think it would be a shame if there's no more consumer Navi31 GPUs released...
AMD Radeon RX 7800 XT Specs
AMD Navi 32, 2430 MHz, 3840 Cores, 240 TMUs, 96 ROPs, 16384 MB GDDR6, 2438 MHz, 256 bit
It looks okay, seems like it will perform similarly to the top Navi21 GPUs.
And best the RTX 3080 and RTX 4070.
I think it would be a shame if there's no more consumer Navi31 GPUs released...
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Yeah, true. The Last of Us requirements are even steeper, the heaviest I've seen in any PC game:
But a less silly CPU recommendation though.
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This.
Unfortunately, it looks like the Navi31 yields (RX 7900 XT and XTX) have sucked so far, based on stock levels I've checked on a couple of sites.
Which likely means AMD has invested a lot, but not yet seen much return on their investment for RDNA3.
Especially compared to the RTX 4070, which has 400-500 items in stock for some models (e.g. Palit).
Might be worth waiting for though.
Edit - One site I checked has a couple hundred 7900 XTs in stock for some Sapphire models, so maybe it's not so bad.
Could be that some of the N31 dies are being reserved for workstation GPUs (due to become available soon) to maximize the profits.
I'd put money on the RX 7800 XT having better yields, assuming it's a Navi32 (5nm) based card.
Which likely means AMD has invested a lot, but not yet seen much return on their investment for RDNA3.
Especially compared to the RTX 4070, which has 400-500 items in stock for some models (e.g. Palit).
Might be worth waiting for though.
Edit - One site I checked has a couple hundred 7900 XTs in stock for some Sapphire models, so maybe it's not so bad.
Could be that some of the N31 dies are being reserved for workstation GPUs (due to become available soon) to maximize the profits.
I'd put money on the RX 7800 XT having better yields, assuming it's a Navi32 (5nm) based card.
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It would almost certainly be a 70 Compute Unit model based on Navi31 (just like the W7800), but because the yields don't look great, I'm not sure if AMD will bother.
Maybe in 6-9 months?
It doesn't bode well for RDNA4 (likely 100 CUs or more), if AMD + TSMC are struggling to produce GPUs with 70 CUs on 5nm.
Maybe in 6-9 months?
It doesn't bode well for RDNA4 (likely 100 CUs or more), if AMD + TSMC are struggling to produce GPUs with 70 CUs on 5nm.
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I think they should use the best fabrication process possible - Probably N3E or N3P in 2024, which is when RDNA4 is due.
They need to bring the power consumption down a lot -AMD said this (power consumption) was the main reason for not having higher end GPUs than the current Navi31.
They need to bring the power consumption down a lot -AMD said this (power consumption) was the main reason for not having higher end GPUs than the current Navi31.
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It seems like Intel's A770 16GB card is quite competitive priced at ~£360.
It's good value if you need a lot of VRAM:
The performance got a boost with new drivers in March.
The cost per frame works out at £4.93 at 1440p resolution.
The cheapest 6700 XT (12GB) is priced at £355 and has a cost per frame of £4.32 so is still the winner overall, as a 1440p card.
Ge RTX 3060 TI is still a powerful card, but I personally would want 12GB of VRAM for 2023 games if playing at 1440p.
But the A770 16GB probably needs another price drop down to £300, to make it really competitive.
It's good value if you need a lot of VRAM:
The performance got a boost with new drivers in March.
The cost per frame works out at £4.93 at 1440p resolution.
The cheapest 6700 XT (12GB) is priced at £355 and has a cost per frame of £4.32 so is still the winner overall, as a 1440p card.
Ge RTX 3060 TI is still a powerful card, but I personally would want 12GB of VRAM for 2023 games if playing at 1440p.
But the A770 16GB probably needs another price drop down to £300, to make it really competitive.
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