88 Degrees C hotspot apparently, these things need a good cooler.
Maybe 88 is fine - I honestly don't know?
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The RX 7900 GRE as of 20/03/2024 - Not such a flawed product?
- Thread starter g67575
- Start date
Maybe 88 is fine - I honestly don't know?
Yup, the RTX 4070 S is pretty power efficient. At least they got rid of those huge power spikes on RDNA3 (vs RDNA2) though.
I'd lean towards the GRE Nitro now if was I buying, because of the greater amount of VRAM.
Looks like they might need to re-review again with fixed drivers for the GRE, to show correct OC results
Maybe the current BIOS is locked down, as the GRE was intended for prebuilt systems originally?
AMD y u no let people overclock the memory on the GRE more than a little?
I'd lean towards the GRE Nitro now if was I buying, because of the greater amount of VRAM.
Looks like they might need to re-review again with fixed drivers for the GRE, to show correct OC results
Maybe the current BIOS is locked down, as the GRE was intended for prebuilt systems originally?
AMD y u no let people overclock the memory on the GRE more than a little?
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There was a new driver released a couple of days ago, that apparently solves the memory overclocking issues on the GRE:
Anyone tried it yet?
Can it clock up to 2500 Mhz on the VRAM?
The RX 7800 XT stock memory clock is 2438 MHz, so anything above that should give good performance, in comparison.
Would be interesting to compare the RX 7900 GRE when running at the same clock speed and memory clock to the RX 7800 XT at stock settings:
www.techpowerup.com
- The maximum memory tuning limit may be incorrectly reported on AMD Radeon™ RX 7900 GRE graphics products.
Anyone tried it yet?
Can it clock up to 2500 Mhz on the VRAM?
The RX 7800 XT stock memory clock is 2438 MHz, so anything above that should give good performance, in comparison.
Would be interesting to compare the RX 7900 GRE when running at the same clock speed and memory clock to the RX 7800 XT at stock settings:
AMD Radeon RX 7800 XT Specs
AMD Navi 32, 2430 MHz, 3840 Cores, 240 TMUs, 96 ROPs, 16384 MB GDDR6, 2438 MHz, 256 bit
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I've changed the title of the thread, as expected, it looks like clocking it above the RX 7800 XT boost and memory clocks yields some impressive results (I think 14.9% performance boost is probably at the upper end of what can be achieved or expected).
We still need to see a proper full review, but the overclocked 3D Mark scores are probably indicative.
Interesting that they can override the clock limits implemented in the VBIOS.
I'm in no doubt now that this GPU will exceed the 7800 XT in every title now, when overclocked sufficiently.
But at stock clocks, I think the card is starved for memory bandwidth.
Presumably you'll want a GRE with decent cooling...
We still need to see a proper full review, but the overclocked 3D Mark scores are probably indicative.
Interesting that they can override the clock limits implemented in the VBIOS.
I'm in no doubt now that this GPU will exceed the 7800 XT in every title now, when overclocked sufficiently.
But at stock clocks, I think the card is starved for memory bandwidth.
Presumably you'll want a GRE with decent cooling...
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2438 Mhz. Which should result in memory bandwidth of 624.1 GB/s.
Spec here:
AMD Radeon RX 7800 XT Specs
AMD Navi 32, 2430 MHz, 3840 Cores, 240 TMUs, 96 ROPs, 16384 MB GDDR6, 2438 MHz, 256 bit
A 2600 Mhz overclock would result in memory bandwidth of 665.6 GB/s.
As far as I can tell, the achievable memory clock depends on the type of memory chips installed on the card, people have been reporting mixed results.
Some cards have memory chips rated for 20 Gbps, presumably some will be 18 Gbps.
RX 7900 XT's are equipped with 20 Gbps memory chips, with a wider memory bus.
EDIT - Looking at the circuit board analysis section for each GRE review on Techpowerup, all the cards they reviewed had 20 Gbps memory chips.
In theory, that should mean they are capable of running at 2500 Mhz.
The only difference I notice, is that the IC chips (for GPU and memory voltage) are rated for 50A on some cards (instead of 70A). Like on the Steel Legend:
https://www.techpowerup.com/review/asrock-radeon-rx-7900-gre-steel-legend/4.html
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I think the hotspot temps were alright on the ASRock Steel Legend in reviews.
Edit - 82 Celsius:
https://www.techpowerup.com/review/asrock-radeon-rx-7900-gre-steel-legend/39.html
Anyone got one?
If so, can you overclock the memory much?
Edit - 82 Celsius:
https://www.techpowerup.com/review/asrock-radeon-rx-7900-gre-steel-legend/39.html
Anyone got one?
If so, can you overclock the memory much?
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There's some other models that like the Gigabyte Gaming, XFX Speedster model and Powercolor Fighter, that it would be good to get some data on.
I'd probably go with the XFX card, as I think the hotspot was around 80 Celsius, but it depends on price also.
The gigabyte model does well also, but has a high RPM. Depends if that bothers you, I suppose
The Memory hotspots are high on most of these cards:
The Gigabyte card seems like a good all rounder. Full review:
https://www.techspot.com/review/2812-amd-radeon-7900-gre-retest/
I'd probably go with the XFX card, as I think the hotspot was around 80 Celsius, but it depends on price also.
The gigabyte model does well also, but has a high RPM. Depends if that bothers you, I suppose
The Memory hotspots are high on most of these cards:
The Gigabyte card seems like a good all rounder. Full review:
https://www.techspot.com/review/2812-amd-radeon-7900-gre-retest/
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Definitely gives the RTX 4070 Super a run for it's money when overclocked 
In general, the minimum framerates are higher at 1440p and 4K (than an overclocked RTX 4070 Super) with a GRE when it's memory is clocked at 2600Mhz (core clocks will be a factor also).
Seems to be about a 10-20% boost to minimum framerates (depending on the game) vs the stock GRE.
Interesting to see the effect of increased memory bandwidth on higher resolutions like 4K.
The obvious thing would be for Nvidia to drop prices on the RTX 4070 Super to £500, currently the cheapest models are ~£550.
Maybe there will be a £50 price drop on some RX 7900 XTs as well.
In general, the minimum framerates are higher at 1440p and 4K (than an overclocked RTX 4070 Super) with a GRE when it's memory is clocked at 2600Mhz (core clocks will be a factor also).
Seems to be about a 10-20% boost to minimum framerates (depending on the game) vs the stock GRE.
Interesting to see the effect of increased memory bandwidth on higher resolutions like 4K.
The obvious thing would be for Nvidia to drop prices on the RTX 4070 Super to £500, currently the cheapest models are ~£550.
Maybe there will be a £50 price drop on some RX 7900 XTs as well.
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Nothing wrong with XFX cards from what I've seen in reviews. Decent cooling generally.
It's a good video with some useful performance stats to compare. The overclocked results particularly.
It's a bit odd how he includes results with AMD's cards with SAM off though, I don't think anyone would play with SAM off, AMD's drivers perform better with it on pretty much always.
Also, the RTX 4070 TI Super is very expensive, I think the cheaper RTX 4070 TI would have been a better comparison (cheapest cards are between £600-£650).
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I wonder if we might be heading for a earlier than expected release of RDNA4 graphics cards? Like August/September 2024?
Will be interesting to see what they release, that's faster than a RX 7900 XTX.
Seems a safe bet that the x900 XT class GPUs will be faster, and they might end up besting a RTX 4090 as well.
Will be interesting to see what they release, that's faster than a RX 7900 XTX.
Seems a safe bet that the x900 XT class GPUs will be faster, and they might end up besting a RTX 4090 as well.
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