ATI Radeon X1900 GT vs GeForce 6600 GT

Place in the ranking	1273	1268
Place by popularity	not in top-100	not in top-100
Power efficiency	no data	0.35
Architecture	Curie (2003−2013)	R500 (2005−2007)
GPU code name	NV43 A2	R580
Market segment	Desktop	Desktop
Release date	12 August 2004 (20 years ago)	1 May 2006 (18 years ago)
Launch price (MSRP)	$64.95	no data

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Core clock speed	500 MHz	575 MHz
Number of transistors	146 million	384 million
Manufacturing process technology	110 nm	90 nm
Power consumption (TDP)	no data	75 Watt
Texture fill rate	4.000	6.900
ROPs	4	12
TMUs	8	12

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 1.0 x16	PCIe 1.0 x16
Width	1-slot	1-slot
Supplementary power connectors	None	1x 6-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR3	GDDR3
Maximum RAM amount	128 MB	256 MB
Memory bus width	128 Bit	256 Bit
Memory clock speed	500 MHz	600 MHz
Memory bandwidth	16 GB/s	38.4 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

1x DVI, 1x VGA, 1x S-Video

2x DVI, 1x S-Video

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	9.0c (9_3)	9.0c (9_3)
Shader Model	3.0	3.0
OpenGL	2.1	2.0
OpenCL	N/A	N/A
Vulkan	N/A	N/A

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

6600 GT 0.37

ATI X1900 GT 0.38
+2.7%

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

6600 GT 142

ATI X1900 GT 145
+2.1%

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	0.37	0.38
Recency	12 August 2004	1 May 2006
Maximum RAM amount	128 MB	256 MB
Chip lithography	110 nm	90 nm

ATI X1900 GT has a 2.7% higher aggregate performance score, an age advantage of 1 year, a 100% higher maximum VRAM amount, and a 22.2% more advanced lithography process.

Given the minimal performance differences, no clear winner can be declared between GeForce 6600 GT and Radeon X1900 GT.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.