AMD Outs Radeon RX 7600M and RX 7600S RDNA3 Mobile Discrete GPUs

[btarunr]

AMD today released its first mobile discrete GPUs based on its latest RDNA3 graphics architecture, the Radeon RX 7600M series, and the RX 7600S series. Although based on the latest architecture, AMD decided to built these GPUs on monolithic 6 nm dies, along with many of the power-management features incorporated from Ryzen 6000-series "Rembrandt" processors. The unnamed silicon these GPUs are based on physically features 32 RDNA3 compute units (2,048 stream processors), along with the updated dual instruction-issue rate SIMD components, 2nd generation Ray Accelerators, and AI acceleration. The silicon also features a 128-bit GDDR6 memory interface, supporting speeds of up to 18 Gbps.

The Ryzen 7600M series consists of the top RX 7600M XT with 32 CU, and the slightly lower RX 7600M with 28 CU. Both come with 8 GB of GDDR6 memory across the chip's 128-bit memory interface. The RX 7600M XT uses 18 Gbps memory clocks, while the RX 7600M uses 16 Gbps. The RX 7600M XT has a power band of 75 W to 120 W, while the RX 7600M needs 50 W to 90 W. The RX 7700S and RX 7600S have the same core-configurations as the RX 7600M XT and RX 7600M, respectively, but lower power draw (up to 100 W for the RX 7700S, and up to 75 W for the RX 7600S). Both GPUs feature updated display- and media-acceleration engines, with support for QHD+ displays up to 240 Hz. AMD claims that the RX 7600M XT beats the performance of desktop NVIDIA GeForce RTX 3060 12 GB.



The product stack consists of four SKUs detailed above.


The complete slide-deck follows.


View at TechPowerUp Main Site

 

[sgarnarite]

Can I put one in my desktop? Hurry up AMD, not interested in $1000 GPUs, show me the mid range.

 

[erocker]

Can I put one in my desktop? Hurry up AMD, not interested in $1000 GPUs, show me the mid range.

I'm really surprised and disappointed there was nothing.

 

[ModEl4]

To hit 32 FP32 TFLOPS it needs at least 3.9GHz (if the SP are dual issue!) and this is the mobile version?
Edit: the 1080p performance difference with RX 6600M is only +20% +30% depending on the title despite having nearly 4X (3.6x) the TFlop rating?

 

[sLowEnd]

I don't know about other countries, but up here in Canada, I haven't seen a laptop using Radeon discrete graphics in years. If it's not integrated graphics, it's always Nvidia. Literally can't even buy a laptop with Radeon discrete graphics even if I wanted to.

 

[ARF]

I don't know about other countries, but up here in Canada, I haven't seen a laptop using Radeon discrete graphics in years. If it's not integrated graphics, it's always Nvidia. Literally can't even buy a laptop with Radeon discrete graphics even if I wanted to.

Send a complaint to the regulatory institutions which are engaged to protect the competition and consumer freedoms.

I buy laptops only with AMD Ryzen and AMD Radeon.

 

[Kapone33]

I don't know about other countries, but up here in Canada, I haven't seen a laptop using Radeon discrete graphics in years. If it's not integrated graphics, it's always Nvidia. Literally can't even buy a laptop with Radeon discrete graphics even if I wanted to.

You can buy them if you look hard enough. Staples used to have the cheap ones but the newest Tech is probably Best Buy or Newegg. Forget about the regular channels though. Especially on Display in the Store.

 

[ARF]

You can buy them if you look hard enough. Staples used to have the cheap ones but the newest Tech is probably Best Buy or Newegg. Forget about the regular channels though. Especially on Display in the Store.

Probably. Also, import from another market is also feasible.

 

[Garrus]

To hit 32 FP32 TFLOPS it needs at least 3.9GHz (if the SP are dual issue!) and this is the mobile version?
Edit: the 1080p performance difference with RX 6600M is only +20% +30% depending on the title despite having nearly 4X (3.6x) the TFlop rating?

yeah I don't get the 32 TFLOP number...

 

[Chrispy_]

Can I put one in my desktop? Hurry up AMD, not interested in $1000 GPUs, show me the mid range.

AMD are probably waiting for Nvidia to show their 4060 and 4050 cards to see how to brand and price the desktop variants of these.
If I was forced to guess based on specs, these really aren't any faster than the RX 6600 and RX6650XT that they'd replace, yet they are on more expensive TSMC N6 silicon compared to the RX6600-series' old TSMC N7nm.

The architectural improvements, (IPC) from RDNA2 to RDNA3 appear to be pretty underwhelming too, The 7900XTX is ~33% faster than the 6900XT at 1440p where memory bandwidth shouldn't be a factor, and that's likely because it is clocked 10% faster and has 20% more compute units. It would be hard to imagine an RDNA2 card with higher clocks and more compute units performing any differently, really, since the performance scaling of the 6600 to the 6950XT models falls exactly where you'd expect it to based on clocks and CU count.

The only thing these appear to bring to the table is power efficiency over the desktop RX6600-series, and for laptops in particular, "desktop RX 6600" performance at 50-75W is really quite appealing. The current RX 6600 on desktop needs about 110W to run at around 2.4GHz, which is still plenty fast enough to run circles around a desktop RTX 3060. Last year I temporarily sidegraded from a 3060 to a 6600 in an attempt to reduce heat in my cramped HTPC case - only it wasn't a sidegrade, just about everything ran significantly better on the 6600 for ~50W less power used.

 

[Speedyblupi]

Can I put one in my desktop? Hurry up AMD, not interested in $1000 GPUs, show me the mid range.

Based on what happened with the 6600M, this might actually be possible. Some Chinese companies put RX 6600Ms on desktop graphics cards, mainly for crypto mining, but they work with AMD's normal drivers and gaming performance is similar to a real RX 6600 (sometimes even slightly better, thanks to its higher "game clock"). It's much less likely to happen again now that crypto is dead though.

If I was forced to guess based on specs, these really aren't any faster than the RX 6600 and RX6650XT that they'd replace, yet they are on more expensive TSMC N6 silicon compared to the RX6600-series' old TSMC N7nm.

Based on what TSMC and a few leakers have said, N6 isn't actually significantly more expensive per area than N7, and may even be slightly cheaper per-transistor due to its higher density. Navi 33 (the 7600M) is also slightly smaller than Navi 23 (the 6600M), so it should cost about the same to make.

 

[Bet0n]

On desktop AMD needs to increase the clock speed of this chip (Navi33) to ~3 GHz. I'm not sure if they can because the RX 6500 XT (also built on 6nm) runs around 2.8 GHz and it has a smaller chip (Navi24).
In that case (running @3 GHz) this would be as fast as a 6700 XT in 1080p and 1440p with 6600 (non XT) MSRP price and with the power consumption of a 6650 XT.
That's my prediction.

 

[Chrispy_]

Based on what TSMC and a few leakers have said, N6 isn't actually significantly more expensive per area than N7, and may even be slightly cheaper per-transistor due to its higher density. Navi 33 (the 7600M) is also slightly smaller than Navi 23 (the 6600M), so it should cost about the same to make.

That's good I guess, but if it costs the same as the old thing and performs the same as the old thing, it has no purpose.

 

[AnotherReader]

The architectural improvements, (IPC) from RDNA2 to RDNA3 appear to be pretty underwhelming too, The 7900XTX is ~33% faster than the 6900XT at 1440p where memory bandwidth shouldn't be a factor, and that's likely because it is clocked 10% faster and has 20% more compute units. It would be hard to imagine an RDNA2 card with higher clocks and more compute units performing any differently, really, since the performance scaling of the 6600 to the 6950XT models falls exactly where you'd expect it to based on clocks and CU count.

I think the IPC uplift is there, but the compiler isn't up to extracting it so far. We can see that in games like CyberPunk, there's significant uplift over the 6900XT. From TPU's review, the advantage of the 7900XT over the 6900XT is 31% at 1440p and 38% at 4K. According to Computerbase, the 7900XT has a 14% frequency advantage over the 6900XT. The performance increase is significantly more than the difference in clock speeds and the CU count is only 5% more.

 

[Kapone33]

On desktop AMD needs to increase the clock speed of this chip (Navi33) to ~3 GHz. I'm not sure if they can because the RX 6500 XT (also built on 6nm) runs around 2.8 GHz and it has a smaller chip (Navi24).
In that case (running @3 GHz) this would be as fast as a 6700 XT in 1080p and 1440p with 6600 (non XT) MSRP price and with the power consumption of a 6650 XT.
That's my prediction.

What is Crazy if you take a 6500XT apart the Die is about the size of one of those chiplets on the 7900XT and XTX. AIB Cards with 3 8 pins apparently have no issue getting over 3 GHz.

 

[Chrispy_]

I think the IPC uplift is there, but the compiler isn't up to extracting it so far. We can see that in games like CyberPunk, there's significant uplift over the 6900XT. From TPU's review, the advantage of the 7900XT over the 6900XT is 31% at 1440p and 38% at 4K. According to Computerbase, the 7900XT has a 14% frequency advantage over the 6900XT. The performance increase is significantly more than the difference in clock speeds and the CU count is only 5% more.

All the more reason to skip RDNA3 this generation I think. The RX8000 series will be along in 2024 and if the "AMD fine wine" of compiler promises have arrived by then, I'll pick up an RX7000-series card in a clearance sale or used.

I'm not paying up front now for promises of future benefits.

 

[AnotherReader]

All the more reason to skip RDNA3 this generation I think. The RX8000 series will be along in 2024 and if the "AMD fine wine" of compiler promises have arrived by then, I'll pick up an RX7000-series card in a clearance sale or used.

I'm not paying up front now for promises of future benefits.

I agree. It makes no sense to buy based upon nebulous gains that may never materialize. For all I know, the gains in CP2077 are due to hand optimized code.

 

[alphaLONE]

To hit 32 FP32 TFLOPS it needs at least 3.9GHz (if the SP are dual issue!) and this is the mobile version?
Edit: the 1080p performance difference with RX 6600M is only +20% +30% depending on the title despite having nearly 4X (3.6x) the TFlop rating?

yeah I don't get the 32 TFLOP number...

Look at the slide with all the SKUs, they put "TFLOPS" instead of "Compute Units". The 7700S/7600M XT have 32 CUs and the 7600S/7600M have 28 CUs.
They should have proofread their slides

 

[sLowEnd]

You can buy them if you look hard enough. Staples used to have the cheap ones but the newest Tech is probably Best Buy or Newegg. Forget about the regular channels though. Especially on Display in the Store.

Best Buy? There's literally just one model of laptop, with a two flavors of colours and a choice of one of two slightly different internals.

 

[ModEl4]

Look at the slide with all the SKUs, they put "TFLOPS" instead of "Compute Units". The 7700S/7600M XT have 32 CUs and the 7600S/7600M have 28 CUs.
They should have proofread their slides

Exactly right, the boost frequency of the shader processors (RX7600M XT) is only 2.61GHz (2.3GHz game frequency) so 21.4 FP32 Tflops

 

[Garrus]

Look at the slide with all the SKUs, they put "TFLOPS" instead of "Compute Units". The 7700S/7600M XT have 32 CUs and the 7600S/7600M have 28 CUs.
They should have proofread their slides

is that all it is? LOL

compute units, not TFLOPS at all

 

[Bet0n]

What is Crazy if you take a 6500XT apart the Die is about the size of one of those chiplets on the 7900XT and XTX. AIB Cards with 3 8 pins apparently have no issue getting over 3 GHz.

I don't undestand. Navi24 is 107mm2.
Meanwhile the GCD is 300mm2, the MCDs are 7x mm2 on the 7900 XT/XTX. And the 7900 is made on 5nm, that's not 6nm.

 

[medi01]

I don't know about other countries, but up here in Canada, I haven't seen a laptop using Radeon discrete graphics in years. If it's not integrated graphics, it's always Nvidia. Literally can't even buy a laptop with Radeon discrete graphics even if I wanted to.

There should be asus with 6800M for around 1.6k. (3080-ish)

https://www.caseking.de/asus-rog-strix-g15-ae-g513qy-hq018t-39-62cm-15-6-zoll-ryzen-9-5900hx-rx-6800m-gaming-notebook-nbas-240.html

 

[Kapone33]

Best Buy? There's literally just one model of laptop, with a two flavors of colours and a choice of one of two slightly different internals.
View attachment 277710

I didn't say there was much choice.

 

[tvshacker]

Can I put one in my desktop? Hurry up AMD, not interested in $1000 GPUs, show me the mid range.

Have you heard about the RX 6700 non XT? It's pretty much what they did. Better performance than (desktop) RX 6650XT, lower power draw, and most of the time, cheaper.