Radeon RX 7600 review - Radeon RX 7000

Radeon RX 7000 Base design

There are several differences between RDNA 2 and RDNA 3. However, the RX 7000 series has 20% more Compute Units (CUs) and doubles the number of FP32 (32-bit floating point) computing functionality per CU. AMD still employs 64 Streaming Processors (SPs) per CU; however, that amount is more like double in many respects. Each GPU holds a single GCD chiplet (Graphics Compute Die) and up to six MCD chiplets (Memory Cache Die). The XTX has a fully enabled GCD and six MCDs. In contrast, the 7900 XT has a partially enabled GCD with 84 CUs and five MCDs — the sixth MCD slot will remain occupied, either with a dummy piece of silicon or a non-functional MCD (non-functional because it is fused off, though it may or may not be defective). Transistor counts have increased significantly compared to the previous generation RX 6000-series, with 58 billion total transistors compared to only 26.8 billion on Navi 21. Theoretical computation has increased by up to 159% compared to the RX 6950 XT, with 61.4 teraflops on the XTX card and 51.6 teraflops on the XT variant.

Radeon	RX 7900 XTX	RX 7900 XT	7600
GPU	Navi 31 XTX	Navi 31 XT	Navi 33
Process Node	5nm+6nm	5nm+6nm	6nm
Die Size	308mm2 (single GCD) 533mm2 (with MCDs)	308mm2 (singleGCD) 533mm2 (with MCDs)	204mm2
Transistors	58 Billion	58 Billion	13.3 Billion
Compute Units	96	84	32
Raytrace Units	96	84	32
Stream Processors	6144 (12288)	5376 (10752)	2048
TMUs/ROPs	192	192	64
Game Clock	2.3 GHz	2 GHz	2250 MHz
Boost Clock	2.5 GHz	2.5 GHz	2625 MHz
FP32 TFLOPs	61 TFLOPs	52 TFLOPs	21.75 TFLOPs
Memory Size	24 GB GDDR6	20 GB GDDR6	8 GB GDDR6
Infinity Cache	96 MB	80 MB	32 MB
Memory Bus	384-bit	320-bit	128-bit
Memory Clock	20 Gbps	20 Gbps	18 Gbps
Bandwidth	960 GB/s	800 GB/s	288 GB/s
Effective Bandwidth	3500 GB/s	2900 GB/s	477 GB/s
TBP	355W	300W	165W
PCIe Interface	PCIe 4.0 x16	PCIe 4.0 x16	PCIe 4.0 x8
Price USD	$999	$899	$299