Overclocking XFX Speedster QICK 309 Radeon RX 7600 XT Black Edition
To overclock the XFX Speedster QICK 309 Radeon RX 7600 XT Black Edition video card we are going to use the built-in performance tuning options in AMD Radeon Software. We were able to increase the power target, the core frequency, and memory with plenty of headroom on all but the memory. We were not able to increase Voltage, but we could change the fan speed, which wasn’t necessary. 
Highest Overclock
With AMD Radeon Software on the XFX Speedster QICK 309 Radeon RX 7600 XT Black Edition video card, we were able to push the Power Limit up by 20%! This is actually quite large, and we didn’t expect that much power headroom bump. The only thing we were limited on was the memory slider, it maxed out at 2500MHz (20Gbps) for the memory, and that was completely stable. We think it could actually overclock higher, but alas, the slider didn’t allow the option to try. Therefore, our memory overclock was from 18Gbps to 20Gbps all day long, an increase in bandwidth from 288GB/s to 320GB/s, a nice bump with 16GB of VRAM.
We had a lot of success overclocking the XFX Speedster QICK 309 Radeon RX 7600 XT Black Edition with the min and max frequency sliders. We found that pushing the max slider didn’t do much at first, but then we raised the minimum slider and that was the ticket, by doing that we saw real gains in frequency over the default setting. Our final stable overclock was with the Min Frequency Slider at 2900MHz and the Max Frequency Slider was always 100MHz above that. For the actual frequency, this provided while gaming, look below at the graph. Oh, and we didn’t have to change the fan speed at all! That’s right, we were able to leave the fans on “automatic” and keep the card quiet while overclocking, and as you will see, its temperatures did not increase while overclocking.
Overclocked GPU Frequency Compared
So we know that by default, the XFX Speedster QICK 309 Radeon RX 7600 XT Black Edition has a gaming clock of 2539MHz and a maximum boost potential of 2810MHz. It is the game clock we are looking at here above, the maximum boost potential is not typical for gaming, it’s just its maximum potential in not-power-hungry apps. What we find above, is that by default, the XFX Speedster QICK 309 Radeon RX 7600 XT Black Edition provides an average default frequency of 2761MHz, which is higher than the 2539MHz game clock. That’s a 9% boost to clock speed compared to the quoted speed, right out of the box without doing anything, thanks to the cooling and power delivery.
Now, when we set AMD Radeon Software to 2900MHz, we can see that the clock speed increases up above 2890MHz, into the lower 2900MHz range! The exact average of our overclock is 2907MHz, so we are hitting that 2900MHz range we were shooting for with the slider! That puts our overclock at a 5% advantage over the default clock speed, which is already 9% higher than the quoted frequency, and above the reference spec. To put it another way, our overclock is 17.6% higher than the AMD reference spec for the Radeon RX 7600 XT and 30%, yes 30% above that of the Radeon RX 7600 reference spec! Now that’s a lot of headroom on clock speed with the new Radeon RX 7600 XT compared to the Radeon RX 7600.
Our final overclock therefore that we used in our testing is 2907MHz/20Gbps (GPU/Mem).